■--.- ■ ■ ■ - ■ .: WSwKwvmV? - ■ > > yyyyyyt > v> yyyyyt * > v* A 'TO . . . . -. ' ■ : ■ ■ ■ . • ► * i > » i v v i \ \\\ i * » *. » » « i V ' . i nViVuVmVmVv >y>y»y»y>ywV»y»y»y»yX>VAy>>y»K^ • i t i » * f » > > i » » » r > ' . : c . Arthur Loverioqe. Museum, Nairobi. Mus. Comp., Zo»l. C5HSS, ! ^m 1 oology THE RAY SOCIETY INSTITUTED MDCCCXLIV. This volume is issiieil to the Subscribers to the Ray SOCIETY for the Year 1897. LONDON: MDCCCXCTIII. THE TAILLESS BATRACHIANS OF EUROPE. BY a. A. BOULENGER, F.B.S. PABT II. LONDON: PRINTED EOR THE RAY SOCIETY. MDCCCXCVIII. PRINTED BY ADLARD AND SON, JiARTHOT,031EYV CLOSE, E.C., AND 20 HANOVER SQUARE, "W. [At page 211. 120_ BE ~l — B . VU LGAR1S. B . VI Rl DIS. B. CALAMITA. -60 -JO DISTRIBUTION OF EUROPEAN SPECIES OF BUFO. 211 Family 3.— BUFONID^E. Vertebrae procoelous, without autogenous ribs ; dia- pophyses of sacral vertebra dilated. Teeth absent. This large family, comprising nine genera, is distri- buted over the whole world except Madagascar, Papuasia, and the islands of the Pacific. Only one genus is represented in the Pal atretic region. A Himalayan genus, Cophophryne, Blgr., founded on a small toad with vertical pupil, and with the sacral vertebra provided with very strongly dilated diapophyses and a single condyle for articulation with the urostyle, effects the passage from the preceding family, from which the true toads differ in the total absence of teeth. (3. Bufo. Laurenti, Syn. Rept., p. 25 (1768). — Partirn. Pupil horizontal. Vomerine teeth none. Tongue elliptical or pyriform, entire and free behind. Tympanum distinct or hidden. Fingers free, toes more or less webbed ; outer metatarsals bound together. Diapophyses of sacral vertebra moderately dilated ; two condyles for articulation with urostyle. Omosternum absent ; sternum a cartilaginous plate. Fig. 78. Open mouth of Bufo calamita. The genus Bufo, of which some 100 species are known, has representatives in most parts of the world, with the exception of Madagascar, Papuasia, Australia, 212 BUF0NID.2E. and the islands of the Pacific. Only three species are found in Europe. Bnfo vulgaris has most of the subarticular tubercles under the toes in pairs, no tarsal fold, the interorbital space at least as broad as the upper eyelid, and no vocal sac. B. viridis has the subarticular tubercles of the toes single, a tarsal fold, the interorbital space usually distinctly narrower than the upper eyelid, and the male is provided with a vocal sac. B. calamita differs from both by its shorter limbs, which preclude it from leaping; the subarticular tubercles of the toes are in pairs as in B. vulgaris, but a tarsal fold is usually present, and the interorbital space is narrow; the males have a vocal sac, which is larger than in B. viridis, and, when blown, bears great resemblance to that of the common tree-frog. The buccal opening to the sac is a single slit, either on the right side or on the left, as shown on fig. 78, p. 211. Owino' to the fact that B. viridis and calamita are much more nearly related to each other than to B. vulgaris , Fatio and other authors have instituted two different sections or sub-genera, that including the two former species being designated Rubeta, the other Phryne. An examination of all the species of the genus shows such a division to be untenable. Still less would one feel inclined to follow the view of Cope, who, whilst uniting B. vulgaris and B. viridis in the genus Bufo, isolated B. calamita as Epidalea, the latter genus being founded solely on the large size of the fronto-parietal fontanelle. The annexed map shows the interesting distribution over the Palaearctic region of the three species under consideration ; Bnfo vulgaris extending through nearly the whole region, whilst the two closely allied repre- sentative species, B. viridis and B. calamita., occupy the former the East, the latter the West, their respective ranges overlapping on a considerable portion of Central Europe. ^ : V ^ 1 BDFO. 213 9. BUFO VULGARIS. (Plate XI.) Rosel, Hist. Ran., p. 85, pis. xx and xxi (1758). liana bufo, Linnaeus, Syst. Nat., i, p. 354 (1766). Rana rubeta, Linnaeus, 1. c. Bufo vulgaris, Laurenti, Syn. Rept., pp. 28 and 125 (1768) ; Daudin, Hist. Rain. Gren. Crap., p. 72, pi. xxiv (1803), and Hist. Rept., viii, p. 139 (1803) ; Eichwald, Zool. Spec. Ross. Pol., iii, p. 167 (1831) ; Duvernoy, Regne Anim., Rept., pi. xxxviii. fig. 3 (1836) ; Bonaparte, Icon. Faun. Ital., Rett. Anf. (1839) ; Bell, Brit. Rept., p. 105. fig. (1839) ; Dumeril & Bibron, Erp. Gen., viii, p. 670 (1841) ; Nilsson, Skand. Faun., Amf ., p. 99 (1842) ; Guiclienot, Explor. Sc. Alg., Rept., p. 27 (1850); Giinther, Cat. Batr. Sal., p. 569 (1858); Strauch, Erp. Alg., p. 79 (1862) ; Giinther, Rept. Brit. Ind., p. 419 (1864) ; Collin, Naturh. Tidsskr. (3), vi, 1869, p. 325 ; Sahlertz, Vid. Meddel., 1871. p. 131; Fatio, Vert. Suisse, iii, p. 587 (1872); De Betta. Faun. Ital., Rett. Anf., p. 72 (1874) ; Schreiber, Herp. Eur., p. 134 (1875) ; Lataste, Herp. Gir., p. 283, pi. xi (1876); Leydig, An. Batr., p. 12 (1877); Lessona, Atti Ace. Line, Mem. CI. Sc. fis., i, 1878, p. 1080, pi. iv ; Boulenger, Proc. Zool. Soc, 1880, p. 569, and Cat. Batr. Ecaud., p. 303 (1882) ; Camerano, Mem. Ace. Torin. (2), xxxv. 1883, p. 235; Heron-Royer, Bull. Soc. Et. Sc. Angers (2), xvi, 1887, p 96; Bedriaga, Bull. Soc. Nat. Mosc, 1889, p. 353. and Amph. Rept. Portusr., p. 11 (1889) ; Heron-Royer & Van Bambeke, Arch. Biol., ix, 1889, p. 291; Boulenger, Ann. & Mag. N. H. (6), v, 1890, p. 141, Trans. Zool. Soc, xiii, 1891, p. 159, and Proc. Zool. Soc, 1891, p. 612, pi. xlvi, fig. 4 ; Mehely, Beitr. Mon. Kronstadt, Herp., p. 65 (1892); Mina-Palumbo, Nat. Sicil., xii, 1893, p. 282 ; W. Evans, Proc. Phys. Soc. Edinb., xii, 1894, p. 512 ; Martin & Rollinat, Vert. Dep. Indre, p. 338 (1894); Werner, Rept. Amph. Oesterr.-Ung., p. 96 (1897) ; Durigen, Deutschl. Amph., p. 467, pi. i, fig. 1 (1897). Bufo cinereus, Schneider, Hist. Amph., i, p. 185 (1799); Daudin, Hist. Rain. Gren. Crap., p. 73, pi. xxv, and Rept., viii, p. 141 ; Brandt & Ratzeburg, Med. Zool., p. 193, pi. xxiii, fig. 1 (1829); Gravenhorst, Delic Mus. Vratisl, p. 62 (1829) ; Koch, Ber. Senck. Ges., 1872, p. 174. Bufo rubeta, Schneider, 1. c, p. 227 ; Bosca, Bull. Soc. Zool. France, 1880, p. 255. Bufo roeselii, Daudin, Hist. Rain. Gren. Crap., p. 77, pi. xxvii, . and Rept., viii, p. 150, pi. xcvi. Bufo ventricosus, Daudin, Hist. Rain., p. 83, pi. xxx, and Rept., ' p. 168. Bufo spinosus, Daudin, Hist. Rept., p. 199. Rana scorodosma, Hermann, Observ. Zool., p. 243 (1804). Bufo pr.netextatus, Boie, Isis, 1826, p. 215. Bufo palmarum. Cuvier, Regne Anim., 2nd ed., ii, p. Ill (1829) Bibi-on & Bory de St. Vincent, Exped- Sc Moree, iii, p. 75, pi. xv, fig. 1 (1832). 214 BUFONIDvE. Bufo colchicus, Eichwakl, 1. c. Bufo minutus, Schinz, Nat. Rept., p. 235, pi. xcvi, fig. 4 (1833). Bufo alpinus, Schinz, 1. c, p. 236, fig. 5, and Faun. Helv., p. 145 (1837). Bufo vulgaris japonicus, Schlegel, Fauna Japon., Rept., p. 106, pi. i'i (1836) ; Lataste, Bull. Soc. Zool. France, 1880, p. 66. Bufo vinearum, Lesson, Act. Soc. Linn. Bord., xii, 1841, p. 61, pi. iv, fig. 1. Bufo gargarizans, Cantor, Ann. & Mag. N. H., ix, 1842, p. 483. Bufo commutatus, Steenstrup, Ber. 24. Vers. Deutsch. Naturf. Kiel, 1847. p. 134. Bufo griseus, Hallowell, Proc. Ac. Philad., 1860, p. 506. Bufo communis, Brucb, Wurzb. Naturw. Zeitschr., iii, 1862, p. 185. Bufo japonicus, Camerano, Atti Ace. Torin., xiv, 1879, p. 884. Bufo rubeta. var. robustior (Lataste), Bosca, Bull. Soc. Zool. France, 1880, p. 256. Bufo sjielteus, Riviere, C. R. Assoc. Franc., xv, 1887, p. 453. Fig. 79. Upper view of head ( $ , Paris). Head once and one-fifth to once and two-thirds as broad as lonp; • snout as lone* as or a little shorter than the diameter of* the orbit, short and blunt, with obtuse canthus and very oblique grooved lores ; nostrils equally distant from the eyes and the tip of the snout, or somewhat nearer the former ; eyes nearer the tip of the snout than the angles of the jaws ; interorbital space flat, in old specimens slightly concave, its width at least equal to that of the upper BUFO. 215 eyelid, and greater than the distance between the nostrils ; tympanum hardly half the diameter of the eye, usually indistinct except anteriorly, sometimes quite hidden under the tubercular skin (larger and more distinct in specimens from Eastern Asia) ; cleft of the mouth extending beyond the level of the posterior border of the eyes. Fingers rather short, blunt or obtusely pointed ; third longest, second and fourth equal and scarcely shorter than the first; subarticular tubercles mostly in pairs ; two large palmar tubercles, one larger and rounded in the middle, and the other smaller and oval at the base of the inner diofit. Hind limb moderately elongate; the tarso-meta- tarsal articulation reaches the tympanum or the eye in the male, the shoulder or the tympanum in the female ; tibia considerably longer than the head, as long as the thigh, the heels meeting or nearly meeting when the limbs are folded at riffht angles to the rhachis. Toes moderately elongate, depressed, nearly entirely or at least two-thirds webbed in the breeding male, one-half to two-thirds webbed in the female; the free border of the web often scalloped or crenulate; sub- articular tubercles small and in pairs, at least under the fourth toe ; two large metatarsal tubercles, the inner very prominent and oval, the outer flatter and rounded. No tarsal fold. Upper surfaces covered with anastomosing wrinkles, and irregular, more or less prominent, often spinous warts, the pores of which may be very indistinct to the naked eye. Japanese specimens are remarkable for the greater prominence of the warts, which are very spinous ; the Chinese have also the warts very pro- minent, but often more elongate, as if two had merged into one. A large, prominent, elliptical or oval parotoid gland on each side behind the eyes, with the inner border divergnno; behind ; the leno-th of this gland contained once and one-sixth to once and a half in the length of the head. Lower surfaces 216 bufonid^:. granular, the granules being larger and more distant from oDe another on the lower belly and under the thighs ; these granules may be tipped with horny spines, which are often black, especially in old females. Brown, olive, greyish, or red above, uniform, or with dark brown or blackish spots or marbliugs; some females handsomely marbled with dark brown, with yellow spots between the marbliugs, others pale olive with rusty spots ; females and young often with the parotoids and the larger warts brick-red ; parotoids (with rare exceptions) margined on the outer side with dark brown or black, which may extend as a band along the upper side of the flanks, this being more usually and markedly the case in Chinese and Japanese specimens. In these Oriental specimens a fine yellow vertebral line is often present. Lower surfaces dirty white, greyish, or brownish, often flesh-colour under the thighs, uniform, or more or less spotted with brown or blackish ; these spots are very large, and often form handsome marbliugs in Asiatic specimens. Iris red or copper-colour, more or less vermiculated with black, rarely (in males) golden, scarcely tinged with red. Male distinguished from the female Fig. 80. by much stronger, more muscular fore limbs, fuller webs between the toes, a shorter body, usually a smoother skin, and, during the breeding season, by the presence of black, horny spinules form- ing bands on the inner upper side of the three inner finders and the inner carpal tubercle. These excrescences sometimes persist long after the pairing Lower view of left ^ s over ; Boscii, in Spain, at Valencia, hand of male, noticed males bearing* them in August and December, and I have found them well developed in English specimens captured on land in August and September. Vocal sacs are absent. The male is smaller than the female, the disproportion P.UF0. 217 being greatest in specimens from Northern and Central Europe. E. Olivier has recorded the very extraordinary case of an adult specimen in which the notochordal larval tail had not only been retained, but had continued to grow in proportion with the animal. The specimen, which measures 63 mm. from snout to vent, with a tail- length of 54 mm., is figured in the Revue Scientifique du Bourbonnais, vi, 1893, pi. ii. It was obtained near Jaligny, in the Department Allier. Measu EtEMENTS (ill mill] metres). _£_ 4. 5. ? 6. 7. lT 2. ~8. 8. From snout to vent 57- ...76.. . 92 .. .94 ...102 ..132. .130. .112 Length of head 16 ...18.. . 21 .. .22 ... 22 .. 29. . 30. . 23 Width of head . 20 ...24.. . 32 .. .34 ... 35 ... 50. . 50. . 38 Diameter of eye 5 ... 6.. ... 8 9 . 9. . 8 Interorbital width 5 ... 6.. . 6-5.. . 7 ... 11. . 11. . 75 From eye to nostril 3% S... 4.. . 5 .. . 5-£ >... 5*5 7. . 6 ., end of snout 7 ... 8.. . H) .. .11 ... 11 ... 15. . 15. . 12 Length of parotoid 11 ...13.. . 18 .. .18 ... IS ... 24. . 27. . 20 Widtb of parotoid 5 ... 7.. . 11 .. . 9 ... 10 .. 12. . 12. . 9 Fore limb 41 ...51.. . 57 .. 59 ... 62 ... 85. . 85. . 67 Hind limb 78 ...97.. .111 .. .98 ...122 ...160. .150. .120 Tibia . 21 ...27.. . 33 .. .30 ... 36 ... 47. .. 46. . 37 Foot 30 ...36.. . 38 .. .36 ... 43 ... 55. .. 54. . 44 1. Chiddingfold. Sun ey : Boulenger. 5. Jersey : Hor] tiell. 2. Denmark: Liitken 6. Paris : Boule nger. 3. Algiers : Anderson 7. Gerez, Portu, jal : yieira. 4. Isle of Arran : Leach. 8. Sicily. Fatio records a female specimen from Sicily measuring- 153 mm. from snout to vent. The largest male from the same island, examined by Camerano, measures 95 mm. According to Mina- Palumbo, the species grows to 180 mm. Geographical Variations. — The differences between European and Japanese specimens are considerable, and have induced some authors to regard the two as distinct species. These differences, which reside chiefly in the greater size and perfect distinctness of the tympanum, the black lateral stripe, and the deep black spots or marblings of the lower parts in the 218 BUF0N1D2E. latter, are completely bridged over when the Chinese and Manchurian specimens are taken into considera- tion. Specimens from Ichang, on the Yangtse Kiang, and Ningpo come nearest the Japanese, from which they do not differ in coloration; but the tympanum, although as distinct, is not so large. Others from Shanghai, Chefoo, Peking, and Corea are intermediate between the latter and the European; the tympanum is always very distinct (as is also sometimes the case in European specimens), but varies considerably in size; the dark lateral stripe is often ill-defined or absent, and the belly may be either largely spotted with black, or almost immaculate. Specimens from Chabarowka, Manchuria, the northernmost Oriental locality, are still nearer the European ; the tympanum is rather small, but perfectly distinct; the belly is immaculate, and the coloration might be said to be identical but for the presence of traces of a light vertebral line, as is often found in specimens from Japan, Corea, and Northern China. Measurements of specimens from Eastern Asia are appended for comparison with those of Europeans, as given in the preceding table. Measurements of Asiatic Specimens (in millimetres). «? ? 1. 2. 3. 4. 5. 6. 7. From snout to vent 65 ... 88 . .. 87. .120.. .120.. .102.. .132 Length of head . 16 ... 21 . 22 . 29.. . 28.. . 26.. . 35 Width of head . 22 30 . '.'. 34. .. 47.. . 45.. . 41.. . 56 Diameter of eye t 7 .. 7. .. 9.. . 9.. . 8.. . 11 Interorbital width 6-5... 7 . .. S. .. 9.. . 10.. . 11.. . 12 From eye to nostril 4 ... 4-5 .. 5. .. 6.. . 6. . 9 ,, end of snout 8 ... 10 .. 11. .. 14.. . 14. . 12. . 18 Diameter of tympanum . 3 ... 3 .. 4. . 6. . 5.. . 8 Length of parotoid 13 ... 14 .. 15. .. 23.. . 20. 24.. . 26 Width of parotoid 7 ... 6 .. 9. .. 10.. . 10. . 10. . 10 Fore limb 46 ... 55 .. 67. .. 82.. . 6Q. . 60.. . b3 Hind liml) So ... 115 ..123. ..150.. .125. .130. .157 Tibia 24 ... 33 .. 36. .. 44.. . 42. . 40. . 50 Foot .... 32 .. U .. 43. .. 54. . 48. . 44. . 52 1. Chabarowka: Dorrit 'S. 4,7. Japan . 2, 5. Corea. 6. Ichan g : Pratt. 3. Chefoo: Swinhoe. BUFO. 219 Skeleton, — Skull strongly ossified. Ethmoid en- tirely or nearly entirely covered over by the fronto- parietals and the large, subtriangular or pear-shaped nasals, the two paired bones being in contact with each other, and forming a continuous or subcontinuous median suture. Squamosal forming a suture with the prootic, its zygomatic process very short. Of the three branches of the pterygoid, the anterior is the longest and the broadest, and joins the maxillary and the palatine ; the inner branch extends to the para- sphenoid, whicli is dagger-shaped, obtuse or truncated anteriorly, and in contact with the palatines. Latter bones strong, with sharp lower keel. Vomers very small, widely separated from each other. Mento- Meckelian bones distinct. Hyoid much longer than broad, with moderately broad cornua without anterior processes, small alas, short postero-lateral processes, and slender, diverging, ossified thyroid processes, which are narrowly separated from each other at the base. In old specimens a small ossification is present on each side of the body of the hyoid, just behind the level of the anterior notch. Diapophyses of second vertebra much flattened and directed forwards ; of third vertebra also much flattened, longer, and horizontal ; of fourth a little longer still, less flattened, and directed backwards. The four following diapophyses slender and subcylindrical, gradually decreasing in length to the last or the last but one, the first two directed backwards, the other two horizontal. Diapophyses of sacral vertebra dilated, subtriangular, their distal diameter equal to or a little less than their length. Two condyles for articu- lation with the urostyle. Latter nearly as long as or shorter than the rest of the vertebral column, a little longer than the skull, with strong dorsal crest, but no processes at the base save exceptionally. Prascoracoids strong, feebly curved, nearly hori- zontal, entering the glenoid cavity ; coracoids slightly 220 BUFONIDvE. Fig. 81. Skeleton of female. BUF0. 221 curved, directed obliquely backwards, expanded at both extremities; no omosternum ; sternum an elongate cartilaginous plate expanded distally, calcified along the middle in adult specimens. Supra-scapula nearly entirely ossified. Humerus once and two-fifths to once and a half as long as radius-ulna, w T ith strong crest ; both bones with calcified epiphyses. Six bones in the carpus, three in contact with radius-ulna ; a single bone to the pollex. Pelvis two-thirds or rather more than two-thirds the length of the vertebral column ; ilia subcylindrical at their free ends, which are covered by the dia- pophyses of the sacral vertebra ; pubis ossified or calcined, entering the acetabulum. Femur moderately curved, as long as or slightly longer than tibia-fibula ; both bones with calcified epiphyses ; astragalus and calcaneum subequal in length, united at both ends by a common calcified epiphysis; the tarsus not quite half as long' as the femur. Three distal tarsals, and two bones to the praehallux. Distal phalanges obtuse, slightly expanded at the apex. Measurements of Skeleton (in millimetres). 3 ? Length of skull . 22 28 Width of skull . 30 39 Least interorbital width 6 8 Dorsal vertebral column 32 40 Urostyle . 28 34 Humerus , 36 36 Radius-ulna 24 26 Man us . 23 31 Pelvis 40 51 Femur 35 41 Tibia , 33 38 Tarsus . 19 22 Pes , 42 45 Habits — The Common Toad is a terrestrial and crepuscular Batrachian, living in holes and crevices, and issuing forth at dusk in search of insects, worms, and slugs, which it catches, after careful aiming, accompanied by nervous movements of the tips of the 222 BUFONlDiE. toes, by darting, with lightning rapidity, its exsertiie slimy tongue. Its movements on land are slow, partly by crawling, partly by short leaps. In the water, to which it resorts once a year for the purpose of breeding, it proves no bad swimmer, owing to the well-developed web of the feet. Its intelligence is greater than that of any other Batra- chian; in captivity it soon accommodates itself to its surroundings, understands that a glass partition is an obstacle, and, placed on a table, will not attempt to jump off, whilst a frog will not hesitate to take a leap from a fifth-story balcony. It is, therefore, easily tamed, answering the call of its master to take food from the hand, or flattening itself down to let him stroke its back. A large Jersey specimen I kept for twelve years, raised its head and came out of its place of concealment when I knocked on the glass front of its terrarium ; it did not evince the slightest timidity, — in fact, liked beiug handled, "and was ever ready to take food. In its excessive greediness it would swallow so many large earthworms in succession that, after a time, they were passed alive ; on two occasions it disposed of whole litters of new-born mice. T. Bell has recorded, on the authority of the Rev. John Phillips, of Ninfield, Sussex, the curious case of a toad attempting to swallow a viper. Although crepuscular, this toad occasionally leaves its retreat in the day- time, namely, during thunderstorms. Specimens are also not infrequently met with in the daytime, crawling about in great pain, with the snout or even the greater part of the head a deep sore, swarming with dipterous larvse. The question whether the flies that select toads for the rearing: of their maggots constitute a distinct form (Lucilia bufonivora, Moniez), like the Australian llctrachom,yia, or not, has been much discussed among entomologists, but I believe the balance of opinion now is that various species resort to that host, on which they are to be regarded as predatory, not bufo. 223 parasitic, since its life is speedily destroyed. The larvae Lave been mostly referred to Luc ilia silvatica and Oalliphora erythrocephala. It has been suggested that the eggs may have been laid in the mouth of the toad whilst feeding, but it appears to me more probable that certain flies simply avail themselves of ulcers, from which these Batrachians not uncommonly suffer, especially about the snout ; in which case the nasal cavities become converted into a nursery, whence the swarming larvae soon spread to the eyes and brain, until the whole head is eaten away, leaving nothing but the skull partly covered by the tough integument. Owing, no doubt, to the necessity for securing food in greater quantity, young specimens are more diurnal, and may be found in the daytime going about in damp places in woods or other shady localities. During periods of drought myriads of tiny toads, which have been compelled to leave the water after the metamorphosis, conceal themselves under stones and in fissures in the soil, whence they emerge all at a time during or after a heavy shower in such numbers that it is sometimes impossible to walk along a path without crushing a lot. Such sudden apparitions have given rise to the idea of showers of toads. Pairing takes place from two to four weeks later than in the common frog ; in England between the end of March and the middle of April, somewhat earlier in warmer latitudes, and as late as the beg-in- ning of May in Norway, when toads congregate in large numbers in ponds and pools, very rarely in shallow ditches. The males are always much the more numerous, and quarrel with rage over the females ; their cry resembles the distant barking of a little dog. The male seizes the female by poking the clenched fists in the axils, and the embrace is so frantic that it is extremely difficult to dislodge him. Individuals of the former sex are usually smaller, and it is not rare to find a young male paired with a female at least twice his length. If the weather be 224 BTJFONID^E. cold, pairing may last a fortnight or more; otherwise the breeding operations are concluded within a week, only males that have failed in finding a mate remain- ing a little longer in the water, swimming about in great anxiety and clasping frogs or toads of other species, even occasionally fishes, or any object, such as a pole or fishing-net, that may be held out to them. Fig. 82. Male and female pairing. The eggs come out slowly, in several hours, in two distinct strings from the oviducts, and they are impregnated in several emissions. The male assists with his toes in pulling out the strings ; and the female, by winding round during oviposition, twists them about water plants or submerged branches of trees, usually not far from the borders. The young leave the water eight to twelve weeks later, measuring 8 to 12 mm. from snout to vent. In a very interesting paper on " The Reptiles and Batrachians of tlie Edin- burgh District," W. Evans records finding a pair of common toads in a deep pool in an old limestone quarry in East Lothian (practically at sea level) in the very act of spawning so far on in the season as the loth of June, 1894. This is the more remark- able from the fact that the common toad and the bufo. 225 common frog may be regarded as tbe two European types in which there is least individual divergence in the breeding- time. Rollinat also reports having met with an isolated breeding couple near Argenton, in France, on the 18th of June, 1893. In the spring of 1897 I captured a pair in a pond at Anseremme, near Dinant, Belgium, on April 29th, about three weeks late ; the female, a large specimen, spawned the following day. Eggs. — Small, 1^ to 2 mm. in diameter, entirely black, in regular files of three or four (two when stretched), in long mucilaginous strings looking like glass tubes. Fig. 83. The eggs number 4972 to 6840 according to Heron - Royer's counting, 1911 to 4152 in three broods counted by W. Evans. The strings measure (with the eggs in double file) 9 or 10 feet, and can be stretched out to a much greater length. The egg is protected by a second mucilaginous envelop within the string. The mucilages soon partially dissolve and release the embryo, which, so to say, drops out before it is able to execute any spontaneous move- ments, before the appearance of the external gills and with a very rudimentary tail, and becomes fixed by its adhesive subcephalic apparatus to the outside of the string, on which long lines of embryos may be seen hanging motionless. Tadpole (PI. II, fig. 3). — Length of body about once and a half its width, and three-fifths to two- thirds the length of the tail. Nostrils much nearer the eyes than the end of the snout. Eyes on the Q 226 bufonid^:. upper surface ; the distance between them about twice as great as the distance between the nostrils, and equal to or somewhat less than the width of the mouth. Spiraculum on the left side, directed backwards, nearly equidistant from either extremity of the body, not very prominent, but visible from above and from below. Anus median Tail three or four times as long as deep, broadly rounded at the end ; both crests nearly equal in depth, with nearly straight and parallel edges; the depth of the muscular part of the tail, at its base, two-fifths the greatest total depth. Beak white, broadly edged witli black. Lips with papillee only at the sides, which form an inward fold ; both upper and lower edges toothed, the series of labial teeth being § ; the second upper series nearly as long as the first, and very narrowly interrupted in the middle ; the three lower series uninterrupted, and occupying nearly the whole width of the lip. Lines of muciferous crypts not or scarcely traceable. Blackish-brown or black above, blackish-grey beneath, muscular part of tail dark brown or blackish ; crests grey, finely speckled, as if powdered with black. The tadpole of this, the largest European Batra- chian, is very small. The largest specimen measured by me is 32 mm. long; body, 12 ; width of body, 8 ; length of tail, 20 ; depth of tail, 5. Habitat. — The common toad inhabits nearly the whole of Europe, northwards to 65° lat. ; it is, however, absent from some of the larger islands — Ireland, Corsica, Sardinia, and the Baleares. It ascends to an altitude of 7000 feet in the Alps. In North-west Africa it is on record from Larache in Morocco, and Tlemsen, Algiers, and Bona in Algeria. It extends across northern and temperate Asia to Manchuria, Japan, China, and Thibet up to 10,000 feet. The altitude of 17,000 feet previously recorded by me is based on an error ; the specimen collected by Mr. Pratt in the province of Sze Chuen, China, came from an altitude of only 1700 feet. '. XII. ft «k ,' ■ /CSsUfO IHsff C ''■! . bufo. 227 The specimen figured on PI. XI is a female from Jerse}', which I have kept alive from 1885 to 1897, and to which I have alluded above. 10. Bufo viridis. (Plates XI and XII.) Bufo viridis, Laurenti, Syn. Rept., pp. 27 and 111, pi. i (1768); Span-man, Vetensk. Ac. Handl. Stockholm, xvi, 1795, p. 183, pi. vii; Schneider, Hist. Amph., i, p. 200 (1799); Daudin, Hist. Rain. Gren. Crap., p. 79, pi. xxviii, fig. 2 (1803), and Hist. Rept., viii, p. 156 ^1803) ; Bonaparte, Icon. Faun. Ital., Rett. Anf. (1838); Giinther, Cat. Batr. Sal., p. 58(1858); Strauch, Erp. Alg., p. 79 (1862); Bruch, Wiirzb. Naturw. Zeitschr.. iii, 1862, p. 185 ; Steindachner, Novara, Amph.. p. 39 (1867) ; Collin, Naturh. Tidsskr. (3), vi, 1869, p. 336; Stoliczka, Jonrn. As. Soc. Beng., xxxix, 1870, p. 155 ; Fatio. Vert. Suisse, iii, p. 411 (1872) ; Koch, Ber. Senck. Ges., 1872, p. 170 ; De Betta, Faun. Ital., Rett. Anf.. p. 74 (1874) ; Lessona. Atti Ace. Line, Mem. CI. Sc. tis., i, 1877, p. 1085, pi. iv; Boulenger, Proc. Zool. Soc, 1880, p. 553, pi. 1, and Cat. Batr. Ecaud., p. 297 (1882) ; Cainerano, Mem. Ace. Torin. (2), xxxv, 1883, p. 336; Heron-Royer, Bull. Soc. Zool. France, 1884, p. 29, and Bull. Soc. Et. Sc. Angers (2), xvi, 1887, p. 134; Walter, Zool. Jahrb., iii, 1888, p. 983; Heron- Royer, Bull. Soc. Zool. France, 1888, p. 26 ; Bedriaga, Bull. Soc. Zool. France, 1888, p. 220, and Bull. Soc. Nat. Mosc, 1889, p. 378; Heron-Royer & Van Bambeke, Arch. Biol., ix, 1889, p. 293; Boulenger, Faun. Ind.. Rept., p. 504 (1890), Trans. Zool. Soc , xiii, 1891, p. 158, and Proc. Zool. Soc, 1891, p. 612, pi. xlvi, fig 5 ; Mehely, Beitr. Mon. Kronstadt. Herp., p. 69 (1892) ; Camerano, Boll. Mus. Torin., viii, 1893. No. 162, p. 3; Mina-Palumbo, Nat. Sicil., xii, 1893, p. 284; Werner, Rept. Amph. Oesterr.-Ung., p. 98 (1897) ; Diirigen. Deutschl. Amph., p. 481, pi. i, fig. 2 (1897). Bufo schrebevianus, Laurenti, 1. c, p. 27. Bana variabilis, Pallas, Spicil. Zool. vii, p. 1, pi. vi, figs. 3 & 4 (1769); Sturm, Deutschl. Faun., iii, Heft 2 (1799). Bana sitibunda, Pallas, Reise Russ. R., i, p. 458 (1771). Bana bufina, Miiller, Prodr. Zool. Dan., p. 35 (1776) ; Retzius. Faun. Suec, p. 283 (1800). Bufo viridi-radiatus, Lacepede, Quadr. 0\\, i, Syn. Meth., & * p. 588(1788). Bana viridis, Lindaker, Abh. Bohm. Ges. Wiss., i, 1791, p. 123. Bufo sitibundus, Schneider, Hist. Amph., i, p. 225 (1799). Bufo cursor, Daudin, Hist. Rept., viii, p. 164 (1803). Bufo variabilis, Merrem, Tent. Syst. Amph., p. 180 (1820) ; Brandt & Ratzeburg, Med. Zool., p. 197, pi. xxiii, figs. 2 & 11 (1829); Gravenhorst, Delic Mus. Vratisl.. p. 63 (1829) ; Eichwald, Zool. Spec. Ross. Pol., iii. p. 167 (1831) ; Nilsson, Skand. Faun., Amf., p. 102 (1842); Schreiber. Herp. Eur., p. 138 (1875) ; Leydig, An. Batr., p. 29 (1877). 228 bufonida;. Bufo arabicus, Riippell, Atl. Reise N. Afr., Rept., p. 20, pi. v, fig. 2 (1827); Heron-Royer, Mem. Soc. Zool. France, iv. 1891, p. 78. Bufo longipes, Fitzinger, in Bonaparte, Mem. Ace. Torin (2), ii, 1839, p. 249. Bufo viridis, part., Dumeril & Bibron, Erp. Gen., viii. p. 681 (1841). Bufo calamita, Giintlier, Rept. Brit. Ind., p. 426 (1864). Bufo boulengeri. Lataste, Rev. Int. Sc, iii, 1879, p. 438. Bufo variabilis, var. balearica, Boettger, Zool. Anz., 1880, p. 642. B c Upper view of head and scapular region. A. Berlin. B. River Hi. c. Nukuss, Amu Daria. Head once and one-fourth to once and a half as broad as long ; snout scarcely prominent, with dis- tinct though obtuse canthus, as long as or a little longer than the diameter of the orbit ; nostrils equally distant from the eyes and the tip of the snout, or somewhat nearer the latter ; eyes equally distant from the tip of the snout and the angles of the B[JFO. 229 jaws ; interorbital space flat and narrow, its width equalling two-thirds to four-fifths that of the upper eye- lid, not or but little greater than the distance between the nostrils; tympanum distinct, at least in the ante- rior half, rounded or a little deeper than broad ; its transverse diameter equals usually about half that of the eye, sometimes only one-third ; cleft of the mouth extending to below the posterior corner of the eye or slightly beyond. Fingers rather short, obtuse ; third longest, second and fourth nearly equal, first visually a little longer, exceptionally equal to second; subarticular tubercles single, or partly single, partly in pairs ; two large palmar tubercles, one large, flat, and rounded in the middle, the other smaller and oval, at the base of the inner finger. Hind limb moderately elongate, in some females from Algeria and Syria very short ; the tarso-metatarsal arti- culation reaches the eye or between the eye and the nostril in the male, between the shoulder and the posterior border of the eye in the female ; tibia as long as or a little longer than the thigh, the heels meeting or slightly overlapping when the limbs are folded at right angles to the rhachis, considerably longer than the head, shorter than the foot. Toes moderatelv Fig. 85. riO&&1 Lower view of foot of male. elongate, depressed, one-half to three-fourths webbed, the web extending as a fringe to the tips; subarticular tubercles prominent and single ; two metatarsal tu- bercles, — inner large, oval, prominent, outer smaller, oval or rounded. A fold along the inner side of the tarsus. 230 BUFONID^l. Back covered with more or less prominent, some- times spinous, distinctly porous warts of various sizes ; those at the angles of the mouth much developed ; a series of large prominent warts usually extends along each side of the body. Lower parts granulate. Parotoid glands very variable in sha.pe ; usually par- allel or converging backwards, more or less pear- or kidney- shaped, the greatest width in front about twice as long as broad, and nearly as long as their distance from the end of the snout ; sometimes, espe- cially in Asiatic specimens, shortly oval, or enor- mously large, much longer than the head, and once and a half to twice as long as broad. The parotoids always depressed, and anteriorly in contact with or very narrowly separated from the upper eyelids. Upper surface of forearm and tibia more or less glandular, sometimes, especially in some Algerian and Central Asian specimens, with a parotoid-like gland as in B. calamita. Coloration very variable. Greyish, greenish, yel- lowish, brownish, pinkish, or whitish above, usually with large, irregular, insuliform, distinct or confluent spots, varying from bright green to dark olive, and often margined with black ; these markings some- times interrupted on the vertebral area, or forming wavy longitudinal bands ; a fine yellow vertebral line sometimes present ; the larger warts at the angles of the mouth, on the sides of the body, and sometimes also on the back, brick-red or crimson. Lower parts dirty white, uniform, or with more or less abundant blackish or olive spots. Tips of fingers and toes and metatarsal tubercles usually brown. Iris greenish- yellow, veined or vermiculated with black. It is a remarkable fact that the occasional presence in this species of a yellow vertebral line, such as is usually present in, and has been regarded as a specific character of, B. calamita, has never been observed in Germany and Denmark, where the allied species co- exists, whilst it is by no means uncommon in Italy, in BUFO. 231 South-eastern Europe, in South-western Asia, and in North Africa, and lias more than once given rise to erroneous statements as to the distribution of B. calamita. It also seems as if this line were occasionally absent in the latter species only in those countries where B. viridis does not exist. In Eastern Asia, where neither B. viridis nor B. calamita,, nor any other species with such a line occurs, the same character is assumed by some specimens of B. vulgaris, which thus take the place of their absent congeners so far as this conspicuous marking is concerned. Male distinguished by much stronger fore limbs, a large callosity on the inner side of the first finger, fuller webs between the toes, a small, feebly pigmented internal vocal sac, and, during the breeding season, blackish horny excrescences forming bands on the inner-upper side of the three inner fingers and the inner carpal tubercle ; the extent of this band on the inner finder is much greater than in the two other species of this genus, and is borne on a pad having some resemblance to that of Rana temporaria. Measurements (in millimetres). S 1. 2. 3. 4. 5. 6. 7. 8. From snout to vent 71 . . 82. .72 . ..77 . ..79 . ..85. ..87 .. . 93 Length of bead 18 .. . 19. .17 . ..18 . ..17 . ..20. ..20 .. . 21 Width of head 25 . . 27. .24 . ..27 . ..26 . ..30. .30 .. . 30 Diameter of eye 7 .. . 7.. . 7 . . 7 . . 7 . .. 8. . 8 .. . 8 Interorbital width 4 .. . 5.. . 5 . .. 5 . .. 5 . .. 5. . 6 .. . 6 From eye to nostril 4 . . 5. . 4 . .. 4 . .. 5 . .. 6. . 5 .. . 6 ,, end of snout . 9 . . 10. . 8 . .. 9 . .. 9 . ..10. .10 .. . 10 Diameter of tympanum . 35. . 4. . 35. .. 35. .. 35. .. 4. . 3-5.. . 4 Length of parotoid 15 .. . 17.. .15 . ..16 . .19 . ..18. .13 .. . 18 Width of parotoid . 7 . . 8. . 7 . ..11 . . 9 . .. 8.. . 9 .. . 8 Fore limb . 45 . . 51. .44 . ..45 . ..45 . ..46. .40 .. . 53 Hind limb . 90 . .104. .87 . ..94 . ..89 . ..93. .80 .. .105 Tibia 27 . . 31. .26 . ..27 . ..26 . ..27. .26 .. . 31 Foot 34 . . 36. .30 . ..32 . ..31 . ..33. .30 .. . 38 1. Verona : de Betta. 2. Athens : Smith Woodward. 3. Duirat, Tunisia : Anderson. 4. R. Ili : Lansdell. 5. Berlin : Boulenger. 6. Szamos Ujvar, Hungary: Mehely 7. Ghardaia, Algeria: Lataste. 8. Dead Sea : Tristram. 232 bufonid^e. Skeleton. — The skull is less strongly ossified than in Bufo vulgaris; the fronto-parietals, which area little narrowed in front, meet only in the posterior half, a narrow portion of the endocranial fontanelle being exposed except in very old individuals ; these bones are usually separated from the nasals, a part of the upper surface of the ethmoid remaining exposed in front of them ; the squamosal is more detached from the prootic. Fig. 86. Upper view of skull. The vertebral column, to the base of the urostyle, measures once and one-fifth to once and one-third the length of the skull in males, once and a half to once and three-fifths in females. The third diapophysis is a little shorter than the second; the sixth, or the sixth and seventh, are directed forwards. The distal diameter of the sacral diapophysis equals its length. Urostyle as long as the six or seven vertebras preceding it, but slightly longer than the skull, exceptionally with a short transverse process at the base. Two bones to the pollex, which is much more de- veloped in males than in females. Pelvis as long as the vertebral column without the urostyle. Tibia as long as, or slightly longer than the femur, which is more strongly curved than in B. vulgaris, and measures once and two-thirds to once and four-fifths the length of the tarsus. Other characters as in B. vulgaris. BUFO. 233 Measurements of Skeleton (in millimetres). ■'/ (ft . '//' HYLA. 247 12. Hyla arborea. (Plates XIV and XV.) Rosel, Hist. Ran., p. 32, pis. ix— xii (1758). Bana arborea, Linnceus, Faun. Suec, 2nd ed., p. 102 (1761), and Syst. Nat., i, p. 357 (1766); Sturm, Deutscbl. Faun., iii, Heft 1 (1799); Seetzen, Reise Syr. Pal., iii, p. 486 (1855). Hyla viridis, Laurenti, Syn. Rept., p. 33 (1768); Daudin, Hist. Rain. Gren. Crap., p. 14, pi. i (1803), and Hist. Rept., viii, p. 23 (1803) ; Gravenhorst, Deiic. Mus. Vratisl., p. 23 (1829) ; Duvernoy, Regne Anim., Rept., pi. xxxvii, fig. 3 (1836) ; Bonaparte, Icon. Faun. Ital., Rett. Anf. (1837); Nilsson, Skand. Faun., Amf., p. 73 (1842); Duineril & Bibron, Erp. Gen., viii, p. 581 (1841); Fatio, Vert. Suisse, iii, p. 423 (1872) ; Lataste, Herp. Gir., p. 214 (1876) ; Lessona, Atti Ace. Line, i, Mem. CI. Sc. fis., 1877, p. 1090, pi. iii; Martin & Rollinat, Vert. Dep. Indre, p. 318 (1894). Calamita arboreus, Schneider, Hist. Amph., i, p. 153 (1799); Merrem, Tent. Syst. Amph., p. 170 (1820). Hyla arborea, Cuvier, Regne Anim., ii, p. 94 (1817) ; Schlegel, Faun. Japon., Rept., p. 112, pi. iii, fig. 6 (1836); Giinther, Cat. Batr. Sal., p. 107 (1858); Collin, Naturh. Tidsskr. (3), vi, 1869, p. 302; De Betta, Faun. Ital., Rett. Anf., p. 61 (1874); Schreiber, Herp. Eur., p. 106 (1875); Leydig, An. Batr., p. 94 (1877) ; Boulenger, Cat. Batr. Ecaud., p. 379 (1882) : Camerano, Mem. Ace. Torin. (2), xxxv, 1883, p. 223, fig. ; Heron-Royer, Bull. Soc. Et. Sc. Angers, xiv, 1885, p. 102 ; Heron-Royer & Van Bambeke, Arch. Biol., ix, 1889, p. 245; Bedriaga, Bull. Soc. Nat. Mosc, 1889, p. 466, and Amph. Rept. Portug., p. 16 (1889) ; Heron-Royer, Mem. Soc. Zool. France, iv, 1891, p. 75; Boulenger, Proc. Zool. Soc, 1891, p. 610, pi. xlvi, figs. 1—3; Mehely, Mon. Kronstadt, Herp., p. 72 (1892); Werner, Rept. Amph. Oesterr.-Ung., p. 101 (1897); Durigen, Deutscbl. Amph., p. 507, pi. iv, fig. 3 (1897). Hyla savignyi, Andouin, Descr. Egypte, Rept., Suppl., p. 183, pi. ii, fig. 13 (1827). Dendrohyas arborea, Tschndi, Class. Batr., p. 74 (1838). Dendrohyas sarda (Bonelli), De Betta, Cat. Syst. Rer. Nat., Rept., p. 24 (1853). Hyla arborea, var. japonica, Giinther, 1. e, p. 109; Boulenger, Cat. Batr. Ecaud., p. 381, and Proc. Zool. Soc, 1887, pi. Ii, fig. 2. Hyla arborea, var. meridionalis, Boettger, Abh. Senck. Ges., ix, 1874, p. 66; Boulenger, Cat., p. 380, and Tr. Zool. Soc, xiii, 1S91, p. 159; Steindachner, Ann. Hofmus. Wien, vi, 1891, p. 303. Hyla japonica, Camerano, Atti Ace Torin., xiv, 1879, p. 895. Hyla perezi, Bosca, An. Soc Esp., ix, 1880, p. 181, and x, 1881, pi. ii, figs. 7—10. Hyla viridis, var. sarda, Boettger, Ber. Senck. Ges., 1880-81, p. 143. 248 HYLIDJ]. Fig. 91. Open mouth. Hyla arborea, var. savignyi, Boulenger. Cat., p. 380; Camerano, Mem. Ace. Turin. (2), xxxv, 1883, p. 226, fig., and Boll. Mus. Torin., viii, 1893, No. 162, p. 4. Hyla arborea, var. intermedia, Boulenger, 1. c p. 381. Hyla barytonus, Heron-Royer, Bull. Soc. Zool. France, 1884, p. 220, pi. ix, and Bull. Soc. Et. Sc. Angers, xiv, 1885, p. 104. Hyla arborea, var. orientalis, Bedriaga, Bull. Soc. Nat. Mosc , 1889, p. 473. Hyla arborea, var. molleri, Bedriaga, 1. c, p. 474. Vomerine teeth in two small, round or transversely oval groups between the choanas, which are not larger than the Eustachian tubes. Tongue cir- cular, moderately free and nicked behind. Head broader than long; snout short, rounded, scarcely projecting, as long as the diameter of the orbit; canthus ros- tralis distinct ; loreal region slio-htlv oblique, grooved ; nostril midway be- tween the eye and the tip of the snout, or a little nearer the latter; eye mode- rate ; interorbital space as broad as the upper eyelid, a little broader than the distance between the nostrils ; tympanum perfectly distinct, not more than half the diameter of the eye. Fingers moderate, webbed at the base, the rudi- mentary web sometimes very indistinct, the terminal disks nearly as large as the tympanum; first finger shorter than second, second and fourth nearly equal, third longest ; subarticular tubercles large, prominent ; no distinct palmar tubercles. A strong fold separates the hand from the forearm above. Hind limb moderate; the tibio-tarsal articulation reaches the tympanum, the eye, or between the eye and the nostril ; tibia as long as or a little longer than the femur, the heels nearly meeting or overlapping when the legs are folded at right angles to the rhachis. Foot as long as or shorter than the tibia; toes one- half to two-thirds webbed, the disks a little smaller than those of the finp;ers ; subarticular tubercles well developed, prominent; a round or oval inner meta- tarsal tubercle, measuring one-third to two-fifths the HYLA. 249 length of the inner toe ; outer metatarsal tubercle very small or indistinct. A more or less distinct fold along the inner edge of the tarsus. Fig. 92. Lower surface of foot. Skin perfectly smooth above, granular on the belly and under the thighs, also on the throat in the female ; a fold above the tympanum, and another across the breast. Usually uniform bright green above, but turning to grey, yellowish, or blackish, with or without small darker spots ; white beneath ; inner fingers and inner toes pale yellow or rosy. The markings which distinguish the different varieties will be noticed further on. Iris golden, more or less obscured by brown vermiculations, or nearly entirely of a rather dark brown. Fig. 93. Male before and after inflation of the vocal sac. Male distinguished by a large external subgular vocal sac, of yellow, brown, or green colour, which when empty forms folds, and when blown out resembles a bladder considerably larger than the head. Apparent copulatory asperities are absent, but the base of the inner finder is sometimes covered durinp; the breeding season with small, colourless, horny granules. 250 uylidm. Geographical Variations. — This species may be divided, from the permanent markings, into a number of more or less defined varieties, each of which has a distinct habitat. 1. Forma typica. A greyish, brown, or black streak, edged above with yellow or white, extends from the nostril through the eye and the tympanum along the side of the body, sending upwards and forwards a branch on the loin ; a whitish line on the upper lip, descending to the shoulder, and then ascending to the eye, limiting an elongate green area behind and below the commissure of the jaws ; a dark, light-edged cross- line above the vent ; the outer side of the fore-arm, carpus and fourth finger, tibia, tarsus, metatarsus, and fifth toe with a more or less distinct dark and light edge. This is the most widely distributed form in Europe, inhabiting the greater part of the continent and ex- tending into Asia Minor. 2. Var. savignyi, Aud. (japonica, Gthr.). Similar to the typical form, but the marking on the loin is absent, or distinct from the lateral streak, which is frequently broken up into spots from the middle of the side. Inhabits Corsica, Elba, Sardinia, the Greek Archi- pelago, South-western Asia, Lower Egypt, Corea, China, and Japan. Allusion has been made in the Introduction to the great facility with which the common tree-frog not only changes colour, but also puts on temporary dark or light spots, which greatly alter its appearance. In this variety, however, we find specimens with large dark spots or stripes on the back and cross-bars on the limbs, which appear to be permanent, and owing to which these frogs have been regarded as distinct species (H. japonica, Gthr., H. sarda, Bonelli). Such specimens are more frequent in China and Japan, but also occur, though in lesser abundance than and promiscuously with unspotted ones, in Corsica, in .'''/. XV. T /f/ ,//■/■?>/■///. /■?//; ,Jr/t vc/// /// . f/f/// // ' I1YLA. 251 Sardinia, in Cyprus, in Syria, and in Persia. We have here to deal with a case of colour-dimorphism which is the more striking: from the fact that in most parts of Europe the coloration of the tree-frog, apart from the play of the chromatophores, is so very constant. These spotted or striped examples are of further interest in throwing light upon the origin of the curious lumbar marking of the typical form. Elongate, dark, light-edged spots may form a regular series along each side of the back, the last spot meeting at an angle the lateral dark streak, with which it may even sometimes be almost confluent, as is shown on one side in a Sardinian specimen in M. Lataste's collection (PI. XV, fig. 1), and in a Japanese specimen in the British Museum (fig. 5). There is every reason to believe that these examples represent the original form from which the other colour-varieties have been derived, and that the lumbar marking of the typical H. arbor ea is to be looked upon as the remains of a second, upper longitudinal stripe. Some specimens (Cyprus) have four stripes or series of spots in addition to the lateral ; others (Japan) have a pair of _l- or >-shaped markings on the scapular region. 3. Var. intermedia, Blgr. Agrees with the typical form in having a lateral line and a mark on the loin ; but the green extends on the sides of the throat, as in var. meridionalls. This variety was established on a specimen from Bologna and another from Sicily, which are perhaps only mongrels between the typical form and the var. meridionalis. 4. Var. meridionalis, Bttgr. (perezi, Bosca, barytonus, Heron-Roy er). The green of the upper surfaces extends on each side of the throat, where it gradu- ally vanishes, or involves nearly the whole of the vocal sac ; a dark brown or golden line from the nostril to the eye, usually continued behind the latter, covering entirely or partially the tympanum ; no 252 HYLIML lateral line on the body; a whitish cross-streak above the vent; a whitish oi* pale golden line along the inner edge of the tibia and the outer edge of the tarsus, metatarsus, and fifth toe ; back of the thighs often yellow or pale orange, uniform or speckled with brown. This form inhabits the south of France, Italy, the Pyrenean peninsula, the Balearic Islands, North-west Africa, Madeira, and the Canary Islands. A further variety (immacidata, Bttgr.*) has been described from China, but as it lacks the web between the fingers it cannot be united with H. arbor ea. Var. orientalis, Bedr., from Russia, and var. molleri, Bedr., from Portugal, I would regard as not sufficiently distinguished from the typical form ; and the var. intermedia, Blgr., may be merely a mongrel. I shall therefore limit myself to remarks on the value of the characters of the vars. savignyi and meridionalis, which have been regarded by some authors as distinct species. But before doing this it is desirable to give detailed measurements of specimens of the typical form and the two principal varieties. Measurements (in millimetres). Forma typica. 1. •2. 3. 4. 5. 6. From snout to vent 44 ... 42 ... 36 . .. 44 .. 43 .. 45 Length of bead 12 ... 12 ... 11 . .. 12 .. 12 .. 12 Width of head 15 ... 15 ... 13 . .. 15 .. 15 .. 15 Diameter of eye 4-5 ... 45 ... 35. .. 4 .. 4-5 .. 4-5 Inter orbital width . 3-5... 4 .. 3 . .. 35 .. 35 .. 3-5 From eye to nostril 3 ... 3 ... 2-5. .. 3 .. 3 .. 3 ,, end of snout . 6 ... 6 ... 5 . .. 6 .. 6 .. 6 Diameter of tympanum o ... 15. .. 2 .. 2-5 .. 2 Fore limb 26 '.'.'. 25 ... 21 . .. 26 .. 27 .. 27 Hind limb . 60 ... 61 .. 53 . .. 63 .. 65 .. 63 Tibia 19 ... 19 ... 16 . .. 20 .. 19 .. 19 Foot. 19 ... 18 ... 15 . .. 18 .. 19 .. 19 1. St. Malo : Boulenger. 5. Opo L'tO. 2, 4. Calabria : Gigliol L. 6. Cret e: Mai tzan. 3. Corunna: Seoane * Ber. Senck. Ges., 1888, p. 189, and 1894, p. 140. HYLA. 253 s Var. savignyi. 1. 2. 3. 4. 5. 6. From snout to vent . 30 . .. 44 . . 40 . . 39 . . 50 . . 39 Length of head . 9 . .. 12 . . 11 . . 10 .. . 13 . . 11 Width of bead . 11 . .. 15 . . 13 .. . 13 .. . 16 . . 13 Diameter of eye . 3-5. .. 4 . . 4 . . 3-5 .. . 5 . . 4 Interorbital width . . 3 . .. 4 . . 35. . 3 .. . 4 . . 35 From eye to nostril . 2-5. .. 3-5.. o . 25.. . 3 . . 25 „ end of snout . 4 . .. 6 . . 5 . . 5 .. . 6 . . 5 Diameter of tyinjjanum . 1-5. o . 2 .. o . 2-5.. . 2 Fore limb . 18 . '.'. 28 '. . 25 . '. 26 ".. . 30 . . 24 Hind limb . . 45 . .. 69 . . 59 .. . 59 .. . m . . 55 Tibia . 14 . .. 21 . . 19 . . 18 .. . 20 . . 16 Foot . . 12 . .. 19 . . 16 . . 16 .. . 19 . . 16 1. Elba: Trevelyan. 2. Wady-el-Kurm : Tristram. 3. L. Bamas : Barrois. 4. Sardinia: Lataste. 5. Fao, Persia : dimming. 6. Gensan, Corea : Leech. Var. meridionalis. S ¥ A 1. 2. 3. 4. 5. 6. From snout to vent . . 38 ... 41 ... 43 ... 38 . . 46 ... 48 Length of head 11 ... 11 ... 12 ... 11 . . 12 ... 12 Width of head 13 ... 13 ... 14 ... 12 . . 15 ... 15 Diameter of eye . 4 ... 4 ... 45... 35. . 4-5... 4-5 Interorbital width 3 ... 35... 4 ... 3 .. . 35... 3-5 From eye to nostril . 3 ... Q o O ... O . 3 5... 35 ,, end of snout 5 ... 5 ... 6 ... 5 . . 6 ... 6 Diameter of tympanum o o ... 2-5... 2 .. . 2-5... 2-5 Fore limb 23 ".'.. 25 ... 2S ... 22 . . 26 ... 27 Hind limb 60 ... 65 ... 6S ... 58 . . 69 ... 70 Tibia . 19 ... 21 ... 21 ... 18 . . 21 ... 22 Foot . . 16 ... 17 ... 19 ... 15 . . 19 ... 19 1,4. Cadillac, Gironde : La taste. 5. Genoa : Pou lton. 2. Bologna : Bianconi. 6. Hammam Meskoutine : 3. Cabeza del Buzy : Bos ca. Anderson In the typical form the tibia is not longei* than the thigh, not or but slightly longer than the foot; when the limbs are folded, the heels hardly or just meet without overlapping, and when stretched forwards the heel or tibio-tarsal articulation reaches the tym- panum or the eye. In the var. savignyi the proportions are the same, or approach those of the var. meridionalis, as, for instance, in the specimen from Elba. In the var. meridionalis the form is more slender ; the tibia is longer than the femur, longer than the foot, 254 hylid.t.. the heels overlap, and the tibio-tarsal articulation reaches the eye or between the eye and the nostril. Besides, the vocal sac is larger, and the voice deeper, whence the name barytonns, which has been given to it by Heron-Royer. Fig. 94. Hind limbs of Hyla arborea, showing variations in the proportions of the tibia and foot. The dotted line indicates the middle line of the body. A. $, f. typiea, St. Malo. B. $, v. Savignyi, Jerusalem, c. J 1 , v. meridionalis, Cannes. These structural differences are, however, far from constant ; there are intermediate forms, as, for in- stance, the var. molleri, which Bedriaga defines as a H. meridionalis with the coloration of the typical form. A male specimen from Ciudad Real may, I think, be referred to it ; the heels slightly overlap, the tibia measures 17 mm. and the foot 15, just as in a H. meri- dionalis, but the coloration is that of the typical form, and the specimen was identified as such by Bosca. A female from Coimbra, received from Dr. de Beclriao;a himself, agrees in the proportion of the limbs : tibia 22 mm., foot 20. A glance at the preceding tables of measurements suffices to show that the difference in length between tibia and foot, so considerable in the extremes, is bridged over in such a manner as to render a precise definition impossible. The same may be said of the development of the vocal sac. We have therefore to fall back upon the coloration for diagnosing the three forms, and this is surely not enough to justify their being treated as species, the more so as the var. savignyi is itself a connecting link between the typical HYLA. 255 form and the var. meridional is .* We have here to deal with a similar case as offered by liana esculenta, and I have adopted the same course, viz. reduced the various forms to the rank of varieties. Skeleton. — Skull feebly ossified. A very large fontanelle above, bordered on the sides by the narrow fronto-parietal bones; ethmoid short, its upper lamina obtusely pointed or rounded in front and penetrating between the nasals, which are small and separated from each other. Squamosal feeble, with short zygomatic branch. Vomers small, separated or narrowly in contact on the median line ; palatines well developed ; pterygoid small, the three branches about equal in length, and widely separated from the palatine; para- sphenoid X-shaped, pointed in front, reaching to be- tween the palatines. Mento-Meckelian bones distinct. Hyoid a short cartilaginous plate, much broader than long, with moderately slender cornua and no anterior processes, very short postero-lateral processes, and long, slender bony styles (thyrohyals) posteriorly. Vertebral column twice to twice and one-third as long as the skull. First diapophysis slender and hori- zontal or directed slightly forwards ; second much longer and expanded at the end, somewhat similar in shape to the sacral diapophysis; third to eighth slender and subequal in length ; the third and fourth directed backwards, the fifth horizontal, the sixth and seventh directed forwards. Sacral vertebra with moderately dilated diapophyses, and two condyles for articulation with urostyle. Latter a little shorter than the rest of the vertebral column, without transverse processes at the base. Praecoracoids slender, strongly curved, entering the glenoid cavity; coracoids nearly straight, dilated towards the epicoracoid ; omosternum and sternum car- tilaginous; supra-scapula partially ossified. Humerus * I have specimens of the latter from Tangier which show a slight but distinct indication of the lateral streak, and are thus intermediate between H. meridionalis and H. savignyi. 256 HYLIDJ3. once and a half as long as raclius-ulna. Carpus with six elements, two of which are in contact with radius- ulna ; two bones to the prsepollex. Pelvis about two-thirds the length of the vertebral column. Pubis ossified, not entering the acetabulum. Fig. 95. Skeleton of male. Femur feebly curved, as long as or shorter than tibia- fibula ; astragalus and calcaneum slender, about half the leno-th of tibia-fibula; three tarsalia in the distal HYLA. 257 row, and two bones to the praehallux. Terminal phalanges claw-shaped, swollen at the base. Measurements of Skeleton (in millimetres). F. typica. V. savignyi. V. meridion 1 ^ ! * M « n RAN A. 277 [5], iv, 1872, p. 201) appears to have been the first to record blue specimens of B. esculenta ; others have since been examined by Pfluger and by Ley dig at Bonn, by Norman Douglass in Baden, and by myself at Frankfort-on-the-Main. I have also received a specimen from Basle through the late Dr. F. Miiller. Brown specimens, without or with little green, as in the specimens of var. lessonse from Norfolk, are not uncommon near Berlin. The var. sylvatica of Koch is based on such a specimen. I have examined the type of the latter, a female, which measures 67 mm. from snout to vent ; hind limb 92 ; tibia 26 ; foot 27; inner toe 6; inner metatarsal tubercle 3. Measurements (in millimetres). 1. 2. 3. 4. t 5. 6. 7. 8. From snout to vent 73 ... 68 . . 64 - ... 65 .. . 84 .. . 85.. . 90 . .60 Length of bead .24 ... 22 . .. 21 ... 21 .. . 26 . . 26.. . 2S . .20 Width of head .25 ... 23 . . 22 ... 21 .. . 29 .. . 29.. . 32 . .21 Diameter of eye . 8 . . . 7 . . 7 ... 7 .. . 8 .. . 7.. . 8 . . 6-5 Interorbital width 15.. . 2 . Cj ! ... 2-5.. . 2-5.. . 3.. . 25. o From eye to nostril 4 ... 4 . .'. 4 . 5 . . 5.. . 6 . '. 4 From eye to end of snout. . . 10 ... 10 . . 1C • ... 10 .. . 12 .. . 12.. . 13 . . 9-5 Diameter of tym- panum . . 6 ... 4 . . 4-5... . 6 . . 5.. . 6 . . 4 Fore limb . . 40 ... 39 . . 3; ' ... 39 .. . 44 . . 43.. . 50 . .32 Hind limb . .106 ...102 . ..100 ...109' .. .123 . .125.. .137 . .94 Tibia . . .33 ... 30 . . 30 ... 34 .. . 38 .. . 35.. . 42 . .28 Foot . . .35 ... 35 . . 33 ... 36 .. . 40 . . 38.. . 45 . .31 Inner toe (from tubercle) . . 8'5... 8"5. . £ ... 9 .. . 10 .. . 9.. . 12 . . 8 Inner metatarsal tubercle . . 3"5... 4 . . 4 ... . 4 .. . 5.. . 55. . 35 1. St. Malo : Boulenger. 5. Paris: B ouleuger. 2. Copenhagen : Liitken. 6. Lolland : Liitk en. 3. Vienna : Wernen. 7. Warsaw : Wrzeniowski. 4, 8. Naples : Monticelli. The range of variation of the somewhat complex assemblage which I have endeavoured to define as the typical form is very great indeed, and forms a gradu- ated series leading from the form ridibunda to the form lessonse. I must confess that the line drawn 278 EANIDJl. between the latter and the typical form appears to me arbitrary, and that my arrangement is open to this criticism, that there is altogether a greater amount of difference between the two extremes of the series than there is between the extreme in the lessonse direction and the form lessonse itself. The true typical B. escu- lenta, as figured by Rosel, is pretty well in the middle of the series ; the outermost specimens with small inner metatarsal tubercle are from France, Corsica, and Italy; whilst the opposite obtains in specimens from Basle and Vienna. Var. lessons. Inner metatarsal tubercle very strong, compressed, hard, crescentic, its depth about half its length, which is 1-j to 2 times in the length of the inner toe, and •5 to 8 times in the length of the tibia ; when the limbs are folded at right angles to the body the heels sometimes meet, but usually fail to meet ; tibia con- siderably shorter than the foot measured from the outer metatarsal tubercle. The tibio-tarsal articula- tion reaches between the shoulder and the eye. Skin smooth or with small warts ; glandular lateral fold very prominent, narrower than the upper eyelid. Bright green or brown above, the black markings sometimes forming longitudinal bands ; hinder side of thighs handsomely marbled with black on a bright yellow or orange ground; vocal sacs not, or but very slightly pigmented. British specimens are olive-brown or bronzy-brown above, spotted with black, strongly marbled on the flanks, where a lio-ht longitudinal area remains un- spotted; glandular folds lighter; the sides of the head and the ground colour of the flanks sometimes green; canthal streak well marked, black; upper lip usually bordered with black ; tympanum chestnut- brown ; a pale yellow or pale green vertebral line, frequently edged with black. The dark cross-bands on the limbs usually very irregular, sometimes absent. RAN A. 279 Lower surfaces more or less profusely spotted with blackish. Iris golden. The enormous differences of proportions separating this variety from the other extreme, the var. ridi- bunda, maybe realised by comparing the measurements in the following table with those given on p. 275. Measurements (in millimetres). t 1. 2. 3. 4. 5. 6. 7. From snout to vent 64 .. . 53 .. . 48 .. . 78 . . 55 . . 73 .. . 60 Length of bead . 22 .. . 18 . . 17 . . 29 . . 18 . . 23 .. . 19 Width of head . . 19 .. . 18 .. . 28 .. . 19 .. . 25 .. . 21 Diameter of eye . 6 .. . 6 . . 55. . 8 .. . 55.. . 7 .. . 6 Interorbital width 2-5.. . 2 . . 1-5. o o . o . 2-5. . 2-5 From eye to nostril 4-5.. . 3 . o .. O . . 5 . .. 35. . 5 . . 4 ,, end of snout 10 .. . 8 . . 8 .. . 12 . . 8 . . 11 .. . 9 Diameter of tympanum . 4 .. . o .. . 3-5.. . 5-5.. . 35.. . 5 .. . 4-5 Fore limb 34 .. . 31 . .29 .. . 42 .. . 29 .. . 40 .. . 32 Hind limb 97 .. . 82 . . 77 .. .110 . . 80 .. .105 .. . 90 Tibia 25 .. . 24 . . 23 .. . 30 .. . 24 .. . 31 .. . 25 Foot 34 .. . 28 .. . 27 .. . 39 .. . 28 .. . 37 .. . 31 Inner toe (from tubercle) 7-5.. . 6 .. . 6 .. . 9 .. . 6-5.. . 8 .. . 7 Inner metatarsal tubercle 5 .. 35.. . 3-5.. . 6 .. o . 5 .. . 45 1, 4. Stow Bedon, Norfolk : Walsingham. 2, 5. Offenbach : Bedriaga. 3, 6. Piedmont : Camerano. 7. Szamos Ujvar, Hungary : Mehely. Skeleton. — The skull is remarkable for the ex- treme narrowness of the interorbital region, its width being only about one-third the length of the fronto- parietal bones ; these are more or less distinctly grooved along the median line, and do not extend quite to the anterior borders of the orbits, a small portion of the ethmoid remaining uncovered and forming an obtuse point anteriorly ; the fontanelle is also more or less exposed in specimens that are not full- grown. Nasals rather large, oblique, forming together an obtuse angle, in contact or narrowly separated on the median line ; their posterior border usually nearly straight. Squamosal large, the zygomatic process long and pointed, nearty twice as long as the posterior 280 RANID^E. Fig. 101. £?^> Skeleton of female, vai\ ridibunda. EANA. 281 process. Vomers rather large, in contact with each other or narrowly separated in the middle. Palatines well developed. Pterygoid with the anterior branch the longest and reaching the palatines. Parasphenoid dagger-shaped, the handle very short, the blade long and pointed, extending to or nearly to the palatines. Occipital condyles on a line with the articular ex- tremities of the upper jaw. Symphysial bones very distinct, thinner than and well distinguishable from the mandibular rami, although fused with the dentary in the adult. Vertebral column once and three-fourths to twice as long as the skull. Vertebras open above, between the zygapophyses, and at the sides, with a low but very distinct neural crest ; diapophyses slender, subcylin- drical, not very unequal in length, with the exception of the second, which is longer than the rest and more flattened ; first diapophysis directed slightly forwards ; third, or third and fourth, slightly backwards; the others horizontal, or the seventh again directed for- wards. Diapophyses of sacral vertebra cylindrical, directed slightly backwards; two condyles for articu- lation with urostyle. Latter a little shorter than the rest of the vertebral column, with strong crest in the anterior three-fourths, without transverse processes. Prascoracoids slender, horizontal ; coracoids much stronger, greatly expanded towards the median line ; omosternum and sternum with a bony style. Supra - scapula partially ossified. Humerus once and a half to once and two-thirds the length of radius-ulna. Six bones in the carpus, two in contact with radius- ulna ; two bones in the pollex. Pelvis about two- thirds the length of the vertebral column, the ilia articulating with the extremities of the sacral diapo- physis. Pubis large, ossified or calcified, entering the acetabulum. Femur feebly curved. Astragalus and calcaneum nearly equal in length, connected at both ends by a calcined epiphysis ; the long bones also with calcified epiphyses. A minute sesamoid bone 282 BAKID.S. on the inner side of the tarsus near its articulation with the tibia. Two bones in the distal tarsal row, and two in the prashallux. Terminal phalanges obtuse. The different races are only distinguished by the proportions of the femur and crus and the size and form of the prashallux, as indicated externally. Measurements (in millimetres). Yar. ridibunda. F. typica. Var. lessonee. Humerus Radius-ulna Manus Pelvis Femur Tibia Tarsus . Pes c? ? Gular region of breeding male, with inflated vocal sacs. web between the toes ; and the presence of a pair of internal vocal sacs, situated at the sides of the throat. In breeding males the skin acquires a spongy ap- x 306 RANID.E. pearance through swelling with lymph, which pro- duces a cloudy, bluish tinge on the upper parts and on the throat, the latter region being sometimes quite blue, sharply contrasting with the white or pale vellow of the abdomen. a/ Measurements (in millimetres). / > f *\ 1. 2. 3. 4. 5. 6. 7. 8. From snout to vent . . SO . .. 84 . . 72 ...59 . .. 95 .. 80 . . 97 . .. 60 Head . . . 22 . . 23 .. . 19 ...16 . .. 23 . .. 22 . . 25 . .. 17 Width of head . 27 . .. 29 . . 25 ...19 . .. 31 . .. 29 . . 34 . .. 21 Diameter of eye . 7 . .. 7-5. . 7 ... 6 . .. 8 . .. 7 . . 8-5. .. 6 Interorbital width 4 . . 4 .. . 3-£ .. 4-5 .. 5 . . 5 . .. 3 From eye to nos- tril . . .4-5.. . 35.. . 8-£ ... 3 . . 4-5 .. 5 . . 5 . o o From eye to end of snout . . 10 . . 11 .. . 8 ... 7-5. . 10 . .. 10 . . 11 . .. 8 Tympanum . 4 . . 5 .. . 3 ... 4 . . 5 . .. 5-5. . 6 . .. 4 From eye to tym- panum . . 25. . 25.. . 2-£ ... 2 . .. 3 . .. 25. . 3 . Fore limb . . 47 . . 49 .. . 45 ...35 . .. 52 .. 47 . . 51 . .. 37 Hind limb . .122 . ..127 . .121 ...95 . ..140 ..130 . .141 . ..102 Tibia . . . 40 . .. 41 . . 38 ...29 . .. 44 .. 43 . . 45 . .. 31 Foot . . . 40 . .. 45 . . 40 ...33 . .. 48 .. 43 . . 45 . .. 35 Inner toe . . 9 . . 11 . . 10 ... 6-5. .. 11 .. 10 . . 9-5. .. 7 Inner metatarsal tubercle . . 4 . .. 4 . . 3 ... 2-5. ... 4 .. 3-5. . 4-5. o 1, 5. Canisbay : Anderson. 4, 8. Corunna : Seoane. 2. Dovre Mts., Norway : Collett. 6. Cuneo: Peracca. 3. Cassel : Norman. 7. Tomos, Hungai •y: Me hely. Variations. — Apart from the description of indi- vidual variations, which, as we have seen, are very considerable in this species, attempts have been made to distinguish a broad-snouted and a sharp-snouted variety, to which Fatio has given the names of brevi- rostris and acutirostris. This distinction cannot be upheld, as we find the two forms occurring pro- miscuously, and the prognathism affecting only young or half-grown specimens. The only form which appears to be entitled to varietal distinction is the Spanish var. parvipalmata, which is constantly dis- tinguished by a shorter web, as we have seen above, . XXI lip Mil* 45? *S^5*3j^V , 'isiasrva/ y^yyiJven^a^t-cu. EANA. 307 and a somewhat more slender habit, resulting in a certain resemblance to Bana agilis, with which it also often agrees in the absence of any but small red spots on the belly. The var. bosniensis, recently established by Werner (' Rept. Amph. Oesterr.,' p. 92) on a single male specimen from Travnik, Bosnia, is, in my opinion, not entitled to stand. Thanks to Dr. Werner's courtesy, I have examined the type, and find the pelvis to be broken, which accounts for the shortness of the body ; hence the tibio-tarsal articulation of the hind limb reaches a little beyond the tip of the snout. The specimen measures 71 mm. from snout to vent ; fore limb 49 mm. ; tibia 42 mm. The var. longipes of F. Miiller — of which the type, from Oberweiler, between Mullheim and Badenweiler, Baden, has been entrusted to me by Mr. Schenkel, the curator of the Basle Museum — is based on a somewhat long-legged individual of the common frog, in which the tibio-tarsal articulation reaches exactly the tip of the snout, — not beyond, as stated in the original description. The specimen, a female, measures 55 mm. from snout to vent ; fore limb 36 mm. ; tibia 30 mm. C. Koch's var. gracilis is no doubt founded on similar examples, which seem to predominate on the southern slopes of the Alps, and have been de- scribed by Heron-Royer as a distinct sub-species, Bana fusca honnorati, from the Basses-Alpes. The larval characters adduced in support of the establishment of the latter form have since proved to be as unreliable as those derived from the perfect animal. Skeleton. — Fronto-parietals broad and flat, about twice and one-third to twice and three-fourths as long as broad. Nasals small, separated from each other, with strongly concave posterior border. Upper part of ethmoid rounded or obtusely pointed in front. Zygomatic process of squamosal shorter than the posterior process. Occipital condyles behind the line connecting the articular extremities of the upper jaw. 308 EANID,£. Fig. 112. Skeleton of female. RANA. 309 shorter than Tibia a little little shorter Vertebral column twice and a half to three times as long as the skull. Second diapophysis once and a half as Ions' as the seventh, which is considerably the sacral ; latter directed backwards, longer than the femur, as long as or a than the pes ; a large sesamoid bone below the tibio- tarsal articulation. Tarsus nearly half as long as the tibia. Two bones to the prsepollex and two or three to the praehallux. Terminal phalanges feebly expanded at the end. The skeleton here figured is that of a female from the Alps of Piedmont, in which the hind limb is a little more elongate in proportion than in British examples. Measurements of Skeleton (in millimetres). $ ? Length of skull . . 17 21 Width of skull . . 19 24 Least interorbital width . 3-5 .. 4 Dorsal vertebral column . . 21 27 Urostyle .... 90 — 28 Humerus .... 20 23 Radius-ulna 13 15 Manus .... 17 20 Pelvis 27 30 Femur . 31 39 Tibia 35 43 Tai'sus . . . . . 16 20 Pes 38 43 Habits. — Ban a temporal* ia must be regarded, on the whole, as a terrestrial frog, although less strictly so than B. arvalis and B. agilis. It is by no means unusual to find specimens in ponds or pools through- out the summer. The majority, however, spend the greater part of their active life on laud, in fields, gardens, meadows, and woods. Many males hibernate under water. The breeding season falls earlier than in any other species, in January and February in the south, in March and April in the north. In the ex- ceptional year 1894 the common frog began to spawn, 310 RANIM!. near London, on the 16th February; last year (1897) on the 20th of the same month : as a rule, the spawning time varies with us from the beginning of March to the beginniDg of April, according to the mildness of the season, whilst in Devonshire and Cornwall it may begin as early as the end of January. The individuals then congregate in large numbers in ponds, pools, ditches, or slow-running brooks, the males clinging to the females by clasping them under the arms, the hands joining on the breast, at the same time uttering their dull croak, grooh, grooh, which, un- like the edible frog's, is produced mostly under water. If the weather turns cold after pairing has set in, the embrace may last for many clays ; the genesic fury of the males is such that nothing will induce them to release their hold. But as males in this species are not in greater numbers than the other sex, we seldom witness those fights which are so frequent in the equally ardent Bufo vulgaris. Nevertheless they also often make mistakes, and clasp female toads, or Pelobates, frequently causing the death of the latter by fracture of the pectoral girdle, that Batrachian, as we have described above, being, in legitimate unions, seized round the waist, not under the arms. That, in the same way, common frogs and toads are injurious to slow-moving pond fishes, such as carp, to which they cling by poking the hands into the eyes of the fish, was noticed by Pennant in the last centurv, and has since been verified bv numerous observers. The eggs are expelled very suddenly, and the large clumps are afterwards seen floating on the surface, many together, these frogs usually selecting the same part of a pond or ditch for spawning. Two or three weeks elapse, as a rule, before the liberation of the embryo, and the young are usually able to leave the water in May or beginning of June, except in the extreme north and high up in the mountains, where, the spawning season being necessarily much retarded, BAN A. 311 tadpoles are still to be found in August, and are even sometimes compelled to hibernate in that condition. Many observers who have kept pairing frogs of this species in confinement have been disappointed at findiuo- the e°'o\s laid under these conditions to be unfertilised, this being often the case when single pairs are confined in jars, and apparently due to the male not emitting his fecundating fluid at the rigdit moment. Fischer-Sigwart has recently attempted to explain this fact by suggesting that the males fecundate the eggs some time after they are laid and after the release of the females from embrace. I cannot accept this explanation, because I have observed, in prac- tising artificial insemination, that the spermatozoa appear to be unable to penetrate the eggs after the mucilaginous capsules have become swollen out with water, which takes place very rapidly after deposition. In order to fully satisfy my mind on this point, I made this spring (March 22nd) the following experi- ment. At 11 a.m. I pressed into two dishes filled with water from the supply- tap a few eggs (about fifty in each dish) from a female held in embrace. The pair were then separated and kept dry until 2 p.m., when the male was killed and the fluid removed from the vesicula seminis, whilst two further small lots of eggs were pressed out of the female into the dishes in which lay those previously obtained, with their cap- sules now considerably inflated. I then poured the seminal fluid, diluted in a wineglassful of water, over the four clumps of eggs. The result was the same in both dishes : the eggs laid at 11 a.m. and fecundated at 2 p.m. did not develop (with one and two excep- tions respectively), whilst the great majority of the others underwent their normal evolution. Eggs. — Vitellus measuring 2 to 3 mm. in diameter, black, with a small white or grey spot on the lower pole; mucilaginous envelop measuring 8 to 10 mm. in diameter. The eggs form one or two large balls, 312 EANID.E. which float on the water.* The number of eges &s varies according to the size of the female ; L. Greening Fig. 113. has counted from 1500 to 2500, and Heron-Royer from 2856 to 4005. Greening's results agree better with my own, as I have counted 1155, 1188, 1584, 1744, and 2044. The embryo, on liberation, is of a dark brown, nearly black, with a well-developed tail, and dark brown, branched external gills, which soon acquire a large size. Tadpole (PI. Ill, fig. 3). — Length of body once and a half to once and two-thirds its width, one-half to two-thirds the length of the tail. Nostrils equally distant from the eyes and the end of the snout, or a little nearer the latter. Eyes on the upper surface, a little nearer the end of the snout than the spiraculum ; the distance between the eyes about once and a half the distance between * Dr. Bidewood showed me in March, 1897, a mass of eggs that had been laid by a moderate-sized frog. These eggs were exceptionally small, the vitellns measuring rather less than 2 mm., and some of them formed a regular string, in a single file, 4 cm. in length, closely resembling the eggs of a toad. I have preserved a portion of these abnormal eggs in spirit, and they are now in the collection of the British Museum. KANA. 313 the nostrils, and a little greater than the width of the mouth. Spiraculum directed backwards and slightly upwards, nearly equally distant from the end of the snout and from the anus, visible from above and from below. Anus opening on the right side, close to the lower edg-e of the subcaudal crest. Tail three to four times as long as deep, ending in an obtuse point ; upper crest convex, not or but slightly deeper than the lower, not extending far upon the back ; the depth of the muscular part, at its base, about one-third the greatest total depth. Beak broadly edged with black. Sides and lower edge of the lip bordered with papilla? ; upper lip with a long series of teeth, followed on each side by two or three series which are widely separated from their fellows on the other side, and gradually decrease in length; four series of teeth in the lower lip, the fourth or inner widely interrupted in the middle, the first or outer at least two-thirds the length of the second. Muciferous crypts very indistinct. Brown to blackish above, with metallic dots ; caudal crests greyish, uniform or dotted or powdered with brown, with or without small golden spots; belly grey or blackish, with metallic dots or spots. Total length, 45 mm.; body, 15; width of body, 10 ; tail, 30 ; depth of tail, 9. These dimensions are taken from one of many large specimens obtained at Anseremme, Belgium, at the end of April, 1894. Habitat. — Bana temporaria is a Northern species, reaching the extreme north of Scandinavia and Lapland. In Northern and Central Europe it is equally common in the plain and in the mountains, up to the limit of perpetual snow; whilst in the south it is confined to the mountains, reaching an altitude of 7200 feet in the Pyrenees and 10,000 feet in the Italian Alps. It is absent from the plain of France south of 46°, but reappears on the Pyrenees and in North-western Spain, where it is found both at sea level and in the mountains. It appears to be absent 314 EANIDiE. from tbe Italian peninsula, and to the east of the Adriatic it has not been recorded from further south than the mountains of Bosnia. In Transylvania its occurrence is restricted to the hills and mountains, its place being taken in the plains by R. awaits and R. agills. It is found not only all over Great Britain, but also in Ireland, where it is much more common on the west than on the east coast, and flourishes in the mountains. Its range in Asia is an extensive one, stretching from the northern and middle Oural and the Kirghiz steppes to the Stannovoi Mountains, Sachalien Island, Mongolia, Manchuria, and Yesso, being replaced further south in Eastern Asia by Rana amurensis, R. martensii, and R. japonica. The male and two females figured on PI. XX are from the environs of London, and give some idea of the great amount of individual variation in coloration to be observed in this species. Other variations in the markings are represented on PI. XXI. Fig. 1 repre- sents a male from Dunphail, Moraj^shire, presented by Mr. W. R. Ogilvie Grant, remarkable for its unusually short snout and its well-marked light vertebral stripe, similar to that of the so-called var. striata of Rana arvalis. Fig. 2 is taken from a young specimen from Hanover, presented by the late Dr. J. E. Gray. Fig. 3 from a female with remarkably pointed snout, sent from Breslau by Prof. G. Born ; a var. acutirostris, Fatio, has been founded on such specimens, which appear to have occasionally given rise to erroneous reports on the occurrence of R. agilis in Germany. Fig. 4 from one of the types of Seoane's var. parvvpalmata from Galicia, Spain. H . -"\: ^ ■% ; KANA. 315 17. Rana GtKmca. (Plate XXII.) Rana latastei (non Blgr.), Boettger, Sitzb. Ak. Berl., 18S8, p. 148. Rana latastii, part., Bedriaga, Bull. Soc. Nat, Moscou, 1889, p. 338. Rana gr&ca, Boulenger, Ann. & Mag. N. H. (6), viii, 1891, p. 346, fig. 1, and Proc. Zool. Soc. 1891, p. 607, pi. xlv, fig. 4 ; Werner, Zool. Anz , 1897, p. 66; Peracca, Boll. Mus. Torin., xii, 1897, No. 286. Vomerine teeth in two small oblique series, extending behind the level of the choana?, originating between the posterior borders of the latter. F 114 Head a little broader than long, moderately depressed. Snout very short, rounded, not at all prominent, as long as or shorter than the diameter of the orbit ; eye smaller than in B. latastii and B. agilis, less prominent ; canthus rostralis distinct; loreal re- gion even less oblique than in B. Upper view of bead. temporaria and B. iberica, distinctly concave; nostril equidistant from the eye and the end of the snout, or a little nearer the latter; the distance between the nostrils greater than the interorbital width, which equals or nearly equals the width of the upper eyelid ; tympanum moderately or feebly distinct, its diameter two-fifths to three-fifths that of the eye, not greater than the length of the inner metatarsal tubercle ; its distance from the eye equals two-thirds to once its diameter. Fingers very obtuse, or slightly swollen at the end, first not extending or extending but slightly beyond second ; subarticular tubercles strongly developed. Hind limb very long, the tibio-tarsal articulation reaching the tip of the snout or beyond ; heels over- lapping when the limbs are folded. Tibia as long as or a little shorter than the fore limb, and at least slightly longer than the foot. Toes almost entirely 316 RANID2E. webbed, even in the very young, with obtuse, slightly swollen tips, and large and very prominent subarticular tubercles. Inner metatarsal tubercle soft, oval, measuring two-fifths to one-half the length of the inner toe ; a very distinct tubercle at the base of the fourth toe. Skin of upper parts smooth, or rough with small warts. Dorso-lateral fold narrow and not very pro- minent, sometimes interrupted, running straight or but very slightly curved from the temple to the groin ; the distance between the dorso-lateral folds on the scapular region equals one-fifth to one-fourth the length from snout to vent. Grey, grey-brown, reddish, olive, yellow, or yellow- ish-olive above, with small or indistinct darker spots, or speckled with blackish, rarely with irregular black spots on the back ; small reddish or orange blotches may be scattered on the back and sides and on the upper eyelids ; glandular lateral folds lighter, sometimes reddish ; a dark band may be present across the interorbital region; A - shaped inter- scapular marking sometimes present, sometimes ill- defined or absent. Canthus rostralis and temporal fold brown or blackish ; loreal region down to the border of the lip dark ; a dark olive or brown temporal spot; a light streak from below the eye to the angle of the mouth. No large spots on the flanks ; limbs with dark brown or olive cross-bands, some- times replaced by dots ; hinder side of thighs yellowish, dotted with brown, brownish, or dark brown with whitish dots. Lower parts cream-colour; throat with grey, brown, or blackish marblings, with a median light area; dark marblings, dots, or spots may be present on the breast; lower surface of hind limbs yellowish or flesh -colour, with or without brown dots or vermiculations. Iris pale golden, more or less obscured with brown. One of the male specimens from Monte Morello, sent me by Count Peracca, belongs to that aberration KAN A. 317 already noticed in Bana esculenta, which is character- ised by the absence of every kind of light pigment, nothing but the brown being present. The throat and belly are pigmentless, transparent, and the iris dark brown without a trace of gold ; the upper parts of a nearly uniform pinkish-brown, with the darker markings on the limbs and temples feebly indicated. Male without vocal sacs, with very strong fore limbs, comparable to those of B. tempovaria, during the breeding season ; the inner finger with a very strong pad covered with blackish-brown horny spinules, forming an undivided patch. Measurements (in millimetres). 1. 2. From snout to vent . .50 ...66 Head 15 ... 22 Width of head . . . 18 ... 26 Diameter of eye . . . 5 ... 65, Interorbital width . . 3 5 ... 5 From eye to nostril . . 3 - 5 ... 4*5 „ end of snout . 7 ... 9 Tympanum . . . 2 5 ... 3 From eye to tympanum . 25 ... 2 5 Fore limb . ' . . . 32 ... 47 Hind limb . . . .88 ...133 , Tibia 28 ... 45 Foot 27 ... 42 Inner toe . . . . 6 ... 9 Inner metatarsal tubercle . 2*5 ... 4 1, 5, 6. Florence : Peracca. 2. Tajce, Bosnia : Brandis. 3. 43 14 16 4-5, 35 3 6-5 o u O £i 28 82 29 23 4-5 2 5 4. 48 16 18 , 55 4 4 8 25 o 30 91 30 26 5 2-5 5. . 59 . 17 . 21 . 55 . 4 . 4 . 8 . 3 . 2-5 . 35 .100 . 32 . 29 . 6-5 . 3 e. 57 17 21 5-5 4 3-5 75 o O 2 34 98 31 30 7-5 3 3. Travnik, Bosnia : Werner. 4. Klimenti, Morea: Douglass. Fig. 115. Upper view of skull. 318 RANID2E. Skeleton. — Fronto-parietals broad and flat; eth- moid rounded anteriorly ; nasals small, oblique, their posterior border rather convex than concave. Tibia longer than femur, but less markedly so than in R. latastii and R. agilis. Distal phalanges with very strongly developed transverse terminal expansion, T-shaped at the end, this being more conspicuous than in any other European species. Measurements or Skeleton (in millimetres). ? 15 16 3-5 16 16 14 9 13 20 25 28 12 24 Habits. — In its movements this species is some- what intermediate between R. temporaria and R. latastii, being not quite so excitable and agile as the latter, which is fully comparable to R. agilis. The voice of the male during the breeding season may be expressed by geek, geclc, geclc; geclc, geek, uttered in very rapid succession. The breeding season, in the Apennines, falls in the month of March, together with that of R. agilis, which occurs in the same localities. As we have mentioned in the Introduction, the great difference in the spermatozoa of the two species precludes the possibility of their intercrossing any more than in the case of R. arvalis and R. tempo- raria, which differ to an equal degree. Tadpole (PL III, fig. 4). — The tadpole of R. grseca, although more nearly resembling that of R. temporaria than any other European species, differs from all its congeners in having the mouth quite as wide as the 6 Length of skull . . . . 12'5 Width of skull . 14 Least interorbital width o O Dorsal vertebral column 14 Urostyle . 13 Humerus . 135 Radius-ulna 8 Manus 12 Pelvis 16 Femur 20 Tibia . 23 Tarsus 10 Pes . 23 RANA. 319 interocular space, which equals once and a half the distance between the nostrils. The labial dentition is more developed even than in 11. temporaria, the teeth forming ^ or \ series, of which the second upper is but narrowly interrupted in the middle ; the four lower series are either all continuous and occupying nearly the whole width of the lip, or the fourth is broken up in the middle. A single series of papillae on the lower labial edge. Tail obtuse, once and two- thirds the length of the body, its depth about one- third its length. Grey above, closely speckled with black, whitish beneath ; muscular portion of the tail reticulated with black ; caudal crests with small black spots or arborescent markings. Total length, 48 mm.; body, 18; width of body, 12 ; tail, 30'; depth of tail, 10. Habitat. — This species was originally described from the mountains of Greece. The first specimens were obtained by von Oertzen at Musinitza, in the Korax mountains, on the limit between Doris and iEtolia, at an altitude of 5800 feet. I received several larval specimens from Dr. Kriiper, which came from the Parnassos, at an altitude of about 3000 feet. More recently my friend Mr. Norman Douglass brought me from a journey to Greece several specimens, which he collected on the hills above Klimenti, in Northern Morea. There is no doubt that the specimens from the mountains of Bosnia, referred by Boettger to B. latastii, belong to this species, as pointed out by Werner ; I have examined a male specimen from Travnik submitted to me by Dr. F. Werner; and another from Tajce, collected by Prof. E. Brandis, is now in the British Museum. Werner obtained it also from Montenegro, and Peracca has ascertained its presence in the Apennines (Monte Morello, near Florence, 2600 feet; Siena, 2600 feet; and Perugia), where it occurs in company with R. agills. The 320 KANID.E. specimens from Tuscany and Umbria mentioned by Bedriaga in his description of B. latastii must also be identified with B. graeca. I have strong reason to believe the species will be found all along the Apennine chain, as Prof. Giglioli kindly informs me a brown frog closely resembling II. latastii occurs in the provinces Umbria, Rome, Terra di Lavoro, Basilicata, and Calabria, at altitudes varying between 1300 and 3000 feet. It is to be hoped Prof. Griglioli will soon be able to undertake a careful study of the vast material at his command, and thus settle in a more exact manner the range of the various species of brown frogs in the Italian peninsula. Since the preceding lines were set up in type I have received from Count Peracca, who is now (March, 1898) on a collecting expedition in the south of Italy, information as to the occurrence of this species in the environs of Potenza, Basilicata. We therefore feel justified in concluding that all pre- vious references to B. tew/poraria and B>. latastii from the Italian peninsula, south of Florence, are based on specimens of B. grseca and B. agilis. The three specimens figured on PL XXII are from Italy. I am indebted for them to Count Peracca. The left-hand figure is taken from a male from Siena ; the right-hand figures represent a female from Monte Morello (Florence), and the aberrant male, from the same locality, noticed above, p. 316. . XX HI. ^**sa V* , . a/nsa. <• beAscc a. // a Aas&W'" RANA. 321 Fig. 116. 18. Rana IBERICA. (Plate XXIII.) Rana iberica, Boulenger, Bull. Soc. Zool. France, 1879, p. 177; Bosca, Bull. Soc. Zool. France, 1880, p. 259 ; Boulenger, Cat. Batr. Ecaud., p. 46 (1882); Boettger, Sitzb. Ak. Berl., 1887, p. 180; Heron- Royer & Van Bambeke, Arch, de Biol., ix, 1889, p. 258, pi. xvi, fig. 4 ; Bedriaga, Bull. Soc. Nat. Moscou, 1889, p. 345, Ampb. Rept. Portug., p. 9 (18S9), and Larves Batr. Portug., p. 8 (1891); Boulenger, Ann. & Mag. N. H. (6), viii, 1891, p. 350, and Proc. Zool. Soc, 1891, p. 608, pi. xlv, fig. 5. Vomerine teetli in two small oblique series behind the level of the choana3. Head as long; as broad or a little broader than long, moderately de- pressed. Snout short, obtuse, round- ed ; canthus rostralis distinct; loreal region not very oblique, slightly con- cave ; nostril equidistant from the eye and the end of the snout, or slightly nearer the latter ; the distance TT ° J ' Upper view of bead. between the nostrils a little greater than the interorbital width, which equals the width of the upper eyelid ; tympanum distinct, its diameter one-half to three-fifths that of the eye; the distance between the eye and the tympanum equals two-thirds to three-fourths the diameter of the latter. Fingers obtuse, first not extending, or extending but very slightly, beyond second ; subarticular tuber- cles moderately developed. Hind limb very long, the tibio-tarsal articulation reaching beyond the tip of the snout in the adult, the tip of the snout in the young ; heels strongly overlapping when the limbs are folded. Tibia but slightly shorter than the fore limb, and nearly as long as the foot. Toes three-fourths or even almost entirely webbed, the web with more or less deep crescentic notch ; subarticular tubercles moderately large and Y 322 RANTD4S. prominent. Inner metatarsal tubercle small, soft, oval, measuring about one-third the length of the inner toe ; a small and more or less indistinct tubercle usually present at the base of the fourth toe. The skin may be perfectly smooth, or the back rough with granules and small round warts; hinder side of thighs granular. Dorso-lateral fold narrow but rather prominent, running straight from the temple to the groin ; the distance between these folds on the scapular region equals two-ninths to one-fourth the length from snout to vent. Coloration very variable. Upper parts yellowish- brown, greyish-brown, or reddish, with or without dark brown spots ; not unfrequently the back is largely blotched with yellowish, and the sides may be spotted with pure white ; or the back may be closely speckled and spotted with black ; flanks often with dark brown spots or marblings ; a dark brown A-shaped marking sometimes present on the scapular region; dorso-lateral folds usually with a dark brown outer margin ; a dark brown canthal streak and a large dark brown or black temporal spot ; a whitish streak from below the eye to the angle of the mouth ; limbs with dark cross bands, which may be very indis- tinct; hinder side of thighs usually speckled or mar- bled with dark brown. Lower parts whitish, rosy under the limbs, and more or less profusely spotted or marbled with brown, especially on the throat and breast ; the middle line of the throat, however, usually unspotted. In a small living male the throat was flesh-colour powdered with gold-dust ; the lower sur- face of the limbs was also carneous, but unpigmented. Iris golden, entirely, or brown in its lower moiety. Males are devoid of vocal sacs, and the nuptial ex- crescences of the inner finger are granular and grey- brown, as in B. agilis, and thus different from those of B. temporaria, grseca, and latastii. RANA. 323 Measurements (in millimetres). 3 ? From snout to vent . Head Width of head . Diameter of eye Interorbital width From eye to nostril . ,, end of snout Diameter of tympanum From eye to tympanum Fore limb Hind limb Tibia . Foot . Inner toe Inner metatarsal tubercle 1, 3. Serra de Gerez 1. 2. 3. . . 40 .. . 54 ... . 14 .. . 14 .. . 17 . 15 .. 15 .. 20 4 .. 4 .. 5 3 .. 35.. 4 3 .. 3 .. 4 . 6 .. 6 .. 8 . 2-5 .. 2-5 .. 3 o o o *J 26 .'.' 28 .'.' 35 . 78 ... 74 ... 98 . 24 ... 24 ... 31 . 26 .. 24 .. 30 . 6 .. 55.. 7 . 2 .. 2 .. 25. 4. 50 16 17 5-5 4 35 7 3 <> 31 m 28 27 65 Gadow. 2,4. Coimbra: Gadow. Skeleton. — Except for the longer tibia, resembles that of E. temporaria. The nasals are likewise pyri- Fig. 117. Upper view of skull. form, with concave posterior border, the fronto- parietals broad and flat, and the upper surface of the ethmoid obtuse or rounded in front. The shape of the nasals, and the lesser terminal expansion of the distal phalanges, serve to distinguish the skeleton of this species from that of its nearest ally, i?-. grseca. 324 RANID2E. Measurements of Skeleton (in millimetres). Length of skull . Width of skull . Least interorbital width Dorsal vertebral column Urostvle Humerus Radius-ulna Manus . Pelvis . Femur . Tibia . Tarsus . Pes ? 15 16 4 16 15 14 9 13 19 25 28 12 27 Habits. — We know very little yet about the habits of this species. Bosca says it is found in mountain streams and springs and among the grass on their borders, never far from water. Males were observed by him in breeding attire at the end of March, at which time larvas were also to be found. The few specimens I have been able to observe alive made tremendous leaps, and their voice in summer resembled that of B. agilis. A small male in breeding costume, received 24th March, 1897, from Mr. Moller of Coimbra, had a rather deeper note, cock, code, code. Tadpole (PI. Ill, fig. 5). — This frog is intermediate between B. temporaria and B. agilis in its larval as well as in its perfect state. Width of mouth much less than the interocular space, which equals nearly twice the distance between the nostrils. Series of labial teeth f , rarely f , the second upper series widely interrupted in the middle, the third very short ; first lower series short, hardly half the length of the second, fourth interrupted in the middle. The beak resembles that of B. agilis, and in one of the four specimens before me the upper mandible is likewise provided with a large black tubercle in the middle of its basal portion. Tail obtuse, once and a half to once and three- fourths the length of the body, its depth about one- third its length. RANA. 325 Lines of muciferous crypts very distinct, as in R. agilis. The colour of the upper parts varies from reddish- brown to blackish-brown ; belly greyish or whitish ; caudal crests brownish, the upper darker than the lower, with brown dots and large blackish spots, which are also present on the muscular part. Total length, 49 mm.; body, 17; width of body, 12; tail, 32; depth of tail, 11. Habitat. — Rana iberica, hitherto observed only in Portugal and North-western Spain, is principally bound to the mountains, where it is fouud up to 4500 feet or even higher. It has been obtained in Galicia and New Castille ; in the Serra de Gerez, the Valle Passos, near Coimbra and Beira, the Serra de Soajo, near Lisbon, and in the Serra de San Mamede ; it is thus on record from all the provinces of Portugal with the exception of Algarve. This species has also been recorded, with some doubts as to the correctness of the identification of a single specimen, from the Lac d'Aubert, Hautes Pyrenees, by Belloc (C. R. Assoc. Franc., Pau, 1892, ii, p. 520). This specimen was probably nothing but an aberrant and badly preserved half-grown Rana temjwraria. I am indebted to the kindness of Mr. F. A. Moller, of the Botanic Gardens, Coimbra, for the specimens figured on PI. XXIII. The specimen to the right is a male, that to the left a female. 326 EANID.2B. 19. RANA LATAST1I. (Plate XXIIL) Rana latastei, Boulenger, Bull. Soc. Zool. France, 1879, p. ISO, and Cat. Batr. Ecaud., p. 46 (1SS2) ; Camerano, Mem. Ace. Torin. (2), xxxv, 1883, p. 269, pi. i, figs. 2—4 ; Peracca, Boll. Mas. Torin., i, 1886, No. 5 ; Borelli, Boll. Mus. Torin., i, 1886, No. 14; Boulenger, Ann. and Mag. N. H. (6), viii, 1891, p. 351, and Proc. Zool. Soc, 1891, p. 608, pi. xlv, fig. 6. Rana temporaria, part., De Betta, Atti 1st. Venet. (2), iv, 18S5, p. 45. Rana latastii, part., Bedriaga, Bull. Soc. Nat. Moscou, 1889, p. 338. Vomerine teeth in two small, oval, oblique groups behind the level of the choanas. Head nearly as long as broad, sometimes slightly broader than long, sometimes slightly longer than broad, more depressed than in H. temporaria and B. iberica, less so than in B. agilis. The snout varies much in shape : it may be short and rounded, Fig. 118. Upper views of heads. as in a platyrrhine B. temporaria, or as long, as pointed, and as prominent as in a typical B. arvalis (two extreme forms are represented in Fig. 118) ; loreal region more oblique than in B. temporaria. and B. iberica, less so than in B. agilis ; nostril equidistant from the eye and the end of the snout, or slightly nearer the latter ; the distance between the nostrils equals the interorbital width, which equals the width of the upper eyelid; tympanum very distinct, its diameter one-half to two-thirds the diameter of the RAN A. 327 eye ; the distance between the eye and the tympanum equals one-half to two-thirds the diameter of the tympanum. Fingers obtuse, first extending beyond second ; subarticnlar tubercles moderately developed. Hind limb very long, the tibio-tarsal articulation reaching beyond the tip of the snout; heels strongly overlapping when the limbs are folded ; tibia as long as the fore limb or a little shorter, as long as the foot or a little longer. Toes three-fonrths webbed in the female, the web with crescentic emargination, three- fourths or almost entirely webbed, and with straight or even convex border to the web in the breeding; male; subarticnlar tubercles moderately large and prominent ; inner metatarsal tubercle small, soft, oval, measuring about one-third the length of the inner toe ; a small outer metatarsal tubercle is usually present at the base of the fourth toe. Skin smooth, or with a few small warts scattered on the back ; back of the thighs granular. Dorso- lateral glandular fold narrow and more or less pro- minent, running nearly straight from the temple to the groin ; the distance between these folds on the scapular region equals one-fourth to one-fifth the length from snout to vent. The coloration varies less than in E. temporaria and E. iberica, but more than in E. agilis. Upper parts greyish or reddish brown, usually with a few dark brown spots ; a dark cross-bar between the eyes, and a A-shaped marking on the scapular region ; small orange or red spots may be present on the back, and, very rarely, a few ink-black blotches ; the glandular lateral folds usually not paler than the surroundings, sometimes reddish, often with a dark brown outer mar- gin ; no large spots on the flanks ; a canthal streak and sometimes the whole of the loreal region dark brown; a dark brown or blackish temporal spot ; a light streak from below the eye to the angle of the mouth ; hind limbs with well-marked olive or dark brown cross-bars ; 328 EANID.E. hinder side of tbigbs speckled or spotted with brown. Lower parts white or pinkish, the throat and the bind limbs often of a bright pink or salmon-colonr ; throat and breast spotted or mottled with grey or brown, with the median line of tbe throat and usually a cross-line on the breast unspotted, tbe two forming a X-sbaped white or pink marking ; belly and lower surface of tbigbs sometimes spotted, sometimes im- maculate. Iris golden, much obscured with brown, at least in its lower half. Males distinguished by much stronger fore limbs, and a large pad on the inner side of the inner digit, wbich, during the breeding time, is covered with dark brown borny excrescences or minute spinules, forming tbree or four distinct patches. No vocal sacs. Measukements (in millimetres). f •> i ■> 1. 2. 3. 4. 5. 6. From snout to vent t # 48 ... 55 . .. 54 ... 62 . . 58 .. . 56 Head . . 16 ... : L7 . .. 16 ... 18 . . 17 .. . 18 Width of head . . 15 ... 18 . .. 18 ... 19 . .. 18 .. . 18 Diameter of eye . # B 5 ... 5-5. .. 6 ... 6 . . 55.. . 6 Interorbital width 4 ... 4-5. .. 4 . . 4 . . 4 .. . 4 From eye to nostril 35... 4 . .. 4 ... 4-5. .. 4 .. . 4 ,, end of snout . 7 ... 8 . .. 7-5... 9 . . 8 .. . 8 Diameter of tympanum 3 ... 4 . .. 35... 35. .. 4 .. . 4 From eye to tympanum o -j ... o .. 2 ... 2-5. o o Fore limb . 30 ... 35 .. 37 ... 38 . .. 34 '.'. '. 35 Hind limb . . 84 ... E>5 ..103 ...113 . ..106 .. .104 Tibia . # , 28 ... 33 .. 35 ... 37 . 0£ ..DO . 34 Foot . . 26 ... 31 .. 33 ... 35 . .. 24 .. . 32 Inner toe m ( 6 ... 6-5 .. 7 .. 8 . .. 7 .. . 6-5 Inner metatarsal tubercle 9 m ... 2-5 .. 25... 2-5. .. 25.. o 1. Oastelfranco : De Betta. 4. Turin : Peracca. 2. Varese : Camerano. 5. Novara : Camerano. 3. Florence : Gi glioli. 6. Venice : De Betta. Skeleton. — Fronto-parietals broad and flat, tbeir widtb in tbe middle contained twice to twice and a half iu tbeir length ; ethmoid rounded or obtusely pointed anteriorly. Nasals small, oblique, separated from each other on the median line, their posterior border nearly straight, or if concave less markedly so RAN A. 329 than in R. temporaria. Zygomatic process of the squamosal a little longer than the posterior. Ver- Fig. 119. Upper view of skull. tebral column twice to twice and a half the length of the skull. Transverse processes unequal in length. Tibia considerably longer than the femur, which measures nearly twice the length of the tarsus. Two bones in the praspollex and two in the prsehallux. Measurements of Skeleton (in millimetres). Length of skull . Width of skull . Least interorbital width Dorsal vertebral column Urostyle Humerus . Radius-ulna Manus Pelvis Femur Tibia Tarsus Pes . gr. 180. Larva 181-182. «/w (Bana), 288 a*ro (_R«»«), 302 ait n't us (Discoglossus), 125 balearica (Bufo), 228 barytonus (Hyla), 248 bedriagx (Bana), 2G6 bombina (Bana), 142, 151 Bombinator, 141 — igneus, 142 — pachypus, 151 bombinus (Bombinator), 142, 152 — (Bufo), 151 boscai (Alytes), 163 bosniensis (Bana), 307 boulengeri (Bufo), 228 hrevipes (Bombinator), 151 /;"/?«« (Bana), 227 -B«/b,211 — calamita, 236 ■ — ■ riridis, 227 — vulgaris, 213 — (Bana), 213 Bufonidse, 211 cachinnans (Bana), 265 calamita (Bufo), 228, 236 — (Epidalea),236 calcarata (Bana), 205, 266 calcaratus (Bufo), 205 — (Z>itfoc«.?),205 camerani (Bana), 298 campanisona (Bana), 163 campanisonus (Bufo), 163 canigonica (Bana), 302 caucasica (Bana), 265 caucasicus (Pelodytes), 180 chinensis (Bana), 205 cinereus (Bufo), 213 cisternasii (Alytes), 175 — (Ammoryctis), 175 Classifications, 2 ccerulescens (Colodacfylus), 125 colchicus (Bufo), 214 communis (Bufo), 214 commutatus (Bufo), 214 cruciatus (Bufo), 236 cruenta (Bana),2>02 cultrrpes (Pelobates), 205 cultripes (Bana), 205 cursor (Bufo), 227 dalmatina (Bana), 332 daudini (Pelodytes), 181 daudinii (Bana), 180 delislei (Alytes), 163 dentex (Bana), 265 Dermal secretion, 30 Development, 85 Didocus, 192 Discoglossidie, 123 Discoglossus, 124 — pictus, 125 dybowskii (Bana), 302 Eggs, 78 Embryos, 85 Epidalea, 212 esculenta (Bana), 265 External characters, 9 fetidissima (Bana), 236 Firmistemia, 262 flaviventris (Bana), 302 flwoiatUis (Bana), 266 /orto (#«»«), 266 fusca (Bombina), 193 — (Bana), 193, 302 fuscus (Bombinator), 193, 205 — (B«/b), 193 — (Pelobates), 193, 205 ALPHABETICAL INDEX. 375 gargarizans (Bufo), 214 Geographical distribution, 115 gracilis (Sana), 307, 333 grceca (Sana), 315 griscus (Bufu), 214 Habits, 57 hispanica (Rana), 266 holtzi (Rana), 298 honnorati (Rana), 302 Hybrids, 112 My I a, 246 — arborea, 247 Hylidae, 246 iberico (Rana), 321 ignea (Bambino), 151 igneus (Bombinator), 142, 151 — (.Btf/b), 142 iff ni color (Bufo), 142 insubricus (Pelobates), 193 Integument, 21 intermedia (Syla), 248 japonica (Hi/hi), 247 — (Rana), 266 japonicus (Bufo), 214 latastii (Rana), 266, 315, 326 latifrons (Pelobates), 193 lesson ce (Rana), 266 longipes (Bvfo), 228 — \Rana), 302 Lungs, 49 maritima (Rana), 265 marmorata (Bambino), 193 — (Rana), 266 mephitica (Rana), 236 meridional is (Hyla), 247 Metamorphosis, 85 minor (Cultripes), 193 minutus (Bufo), 214 molleri (Hgla), 248 mufcz (i?««rt),301 nigromaculata (Rana), 266 Nuptial asperities, 70 obstetricans (Alytes), 163 — (Bombinator), 163 — (5«/o), 163 — (Rana), 163 obtusirostris ( Rana), 302 orientalis (Hgla), 248 Oviposition, 61 oxyrrhinus (Rana), 288, 298 paehypus (Bombinator), 151 Pairing, 64 palmarum (Bufo), 213 parvipalmata (Rana), 302 Pelobates, 192 — cultripes, 205 — fuscus, 193 Pelobatidx, 179 Pelodyies, 179 — punctatus, 180 Pelodytopsis, 180 perezi (Hyla), 247 — (Rana), 266 Phaneroglossa, 123 Phryne, 212 picta (Rana), 125 pictus (Discoglossus), 125 platyrrhinus (Rana), 302 plicata (Rana), 180 plicatus (Bombinator), 180 pluvialis (Bufo), 151 Poison, 30 parosa (Rana), 266 — (Tomopterna), 266 portentosa (Rana), 236 portentosus (Bufo), 236 prsetextatus (Bufo), 213 jirorincialis (Cultripes), 205 punctata (Rana), 180 punctatus (Alytes), 180 — (Obstetricans), 180 — (Pelodytes), 180 ifa»(r, 262 — ayifts, 332 — arcalis, 288 — camera ni, 2b8 — esculenta, 265 — grmca, 315 — iberico, 321 — latastii, 326 „ — temporaria, 301 Ranidx, 262 reinhardti (Hoplobat rachus), 266 — (Rana), 266 ridibunda (Rana), 265 robust ior (Bufo), 214 roe.ve/u" (Bufo), 213 Rube fa, 212 — (2?/&»), 247 — (Rana), 227, 266 Viscera, 49 Vocal sacs, 61 Voice, 61 vulgaris (Bufo), 213 — (Obstetricans), 163 — (Rana), 265 PRINTED BY ADLARD AND SON, BARTHOLOMEW CLOSE, E.C., AND 20, HANOVER SQUARE, W. 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Thompson, I. C, Esq., F.L.S., F.R.M.S., 53, Ctoxteth road, Liver- pool. Thomewill, Rev. C. F., F.E.S., Calverhall Vicarage, Whitechurch, Salop. Toronto, University of, Canada. Torquay Natural History Society, Museum, Babbacombe road, Torquay. Townsend, F., Esq.,M.A., M.P., F.L.S., Ilunington Hall, Shipston-on- Stour. Trimble, Mrs. James, Egerton House, Egerton, Kent. Tunbridge Wells, Natural History Society, Tunbridge Wells. Turner, Professor Sir William, F.R.S.E., University of Edinburgh. University College, London. Upsala, University of, Sweden. Vicary, William, Esq., The Priory, Colleton crescent, Exeter. Waldegrave, Earl, 20, Bryanston square, W. Walker, Alfred 0., Esq., F.L.S., Nant Glyn, Colwyn Bay, Denbighshire. 15 Walker, Rev. Dr., F.L.S., Dun Mallard, Cricklewood, N.W. Walsingham, Thomas de Grey, Lord, M.A., F.R.S., F.Z.S., Merton Hall, Thetford, Norfolk. Warburg. J. C, Esq., 8, Porchester terrace, W. Warrington Museum and Library, Warrington. Washington Library of Congress, U.S.A. Webb, S., Esq., Maidstone House, Dover. Wellington College, Berks. Welter, Mons. II. , 39, Rue Bonaparte, Paris. Wesley, E. F., Esq., A.K.C., 28, Essex street, Strand, W.C. West Kent Natural History Society, Herbert Jones, Esq., F.L.S., Hon. Treas., 15, Montpelier Row, Blackheath, S.E. Whittle, F. G., Esq., 3, Marine Avenue, Southend, Essex. Wickes, W. D., Esq., 32, Burlington Gardens, Acton, W. Wiltshire, Rev. Professor T., M.A., F.L.S., Secretary, 2o, Granville park, Lewisham, London, S.E. Wood, J. IL, Esq., M.B., Tarrington, Ledbury. Wright, Professor E. P., F.L.S., Trinity College, Dublin. Yale University, New Haven, U.S. York Philosophical Society, York. Zoological Society, 3, Hanover square, W LIST OF THE ANNUAL VOLUMES OF THE RAY SOCIETY. FROM THEIR COMMENCEMENT, IN 1844. TO JUNE, 1898. B LIST OF THE ANNUAL VOLUMES ISSUED BY THE RAY SOCIETY. For the First Year, 1844. I. Reports on the Progress of Zoology and Botany. Trans- lated by H. E. Strickland, Jan., M.A., F.R.S., E. Lan- kester, M.D., F.R.S., and W. B. Macdonald, B.A. 8vo. II. Memorials of John Ray : consisting of the Life of John Ray, by Derham ; the Biographical Notice of Ray, by Baron Cnvier and M. Du petit Thouars, in the ' Biographie Universelle ; ' Life of Ray, by Sir J. E. Smith : the Itine- raries of Ray, with Notes, by Messrs. Babington and Yarrell. Edited by E. Lankester, M.D., F.R.S. 8vo. III. A Monograph of the British Nudibranchiate Mollusca. By Messrs. Alder and Hancock. Part I. Ten Plates. Imp. 4to. For the Second Year, 1845. I. Steenstrup on the Alternation of Generations. Translated from the German, by George Busk, F.R.S. Three Plates. 8vo. II. A Monograph of the British Nudibranchiate Mollusca. By Messrs. Alder and Hancock. Part II. Thirteen Plates. Imp. 4to. 20 LIST OF ANNUAL VOLUMES III. Reports and Papers on Botany, consisting of Translations from the German. Translated by W. B. Macdonald, B.A. ; G. Busk, F.R.S.; A. Henfrey, F.R.S. ; and J. 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A Monograph on the Structure and Development of the Shoulder-girdle. By W. K. Parker, F.R.S. Thirty Plates. Imp. 4to. II. The Miscellaneous Botanical Works of Robert Brown, D.C.L., F.R.S. Vol. II. 8vo. For the Twenty-fifth Year, 1868. I. Vegetable Teratology. By M. T. Masters, M.D., F.L.S, 8vo. II. The Miscellaneous Botanical Works of Robert Brown, D.C.L., F.R.S. Vol. III. Thirty-eight Plates. Imp. 4to. (Completing the work.) For the Twenty-sixth Year, 1869. A Monograph of the Gymnoblastic or Tubularian Hydroids. By J. Allman, M.D., F.R.S. Part I. Twelve Plates. Imp. 4to. For the Twenty- seventh Year, 1870. A Monograph of the Gymnoblastic or Tubularian Hydroids. By J. Allman, M.D., F.R.S. Part II. Eleven Plates. Imp. 4to. (Completing the work.) 26 LIST OF ANNUAL VOLUMES For the Twenty-eighth Year, 1871. A Monograph of the Collembola and Thysanura. By Sir J. Lubbock, Bart., M.P., F.R.S. Seventy-eight Plates. 8vo. For the Twenty-ninth Year, 1872. A Monograph of the British Annelids. 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Vol. III. Eleven Plates. 8vo. (Com- pleting the work.) II. A Monograph of the British Spongiadae. By the late J. S. Bowerbank, LL.D., F.R.S. Edited, with additions, by Rev. A. M. Norman, M.A., F.L.S. Vol. IV. Seven- teen Plates. 8vo. (Completing the work.) For the Thirty-seventh Year, 1880. A Monograph of the British Aphides. By G. B. Buckton, F.R.S. Vol. Hi. Twenty-eight Plates. 8vo. For the Thirty-eighth Year, 1881. A Monograph of the British Phytophagous Iiymenoptera. By P, Cameron, F.E.S. Vol.1. Twenty-one Plates. 8vo. 28 LIST OF ANNUAL VOLUMES For the Thirty-ninth Year, 1882. A Monograph of the British Aphides. By G. B. Buekton, P.R.S. Vol. IV. Twenty-seven Plates. 8vo. (Com- pleting the Work.) For the Fortieth Year, 1883. British Oribatidic. Bv A. D. Michael, F.L.S. Vol. T. Thirtv-one Plates. 8vo. For the Forty-fikst Year, 1884. A Monograph of the British Phytophagous Hymenoptera. By P. Cameron. F.E.S. Vol. II. Twentv-seven Plates. 8vo. For the Forty-second Year, 1885. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by H. T. Stainton, F.R.S. Vol. I. The Butterflies. Seventeen Plates. 8vo. For the Forty-thikd Year, 188G. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by H. T. Stainton, F.R.S. Vol. II. The Hawk-Moths and part of the Bornbyees. Eighteen Plates. 8vo. ISSUED BY THE RAY SOCIETY. 29 Foit the Forty-fourth Year, 1887. British Oribatidae. By A. D. Michael, F.L.S. Vol. II. Thirty-one Plates. 8vo. (Completing the Work.) For the Forty-fifth Year, 1888. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by H. T. Staiuton, F.R.S. Vol. 111. The concluding portion of the Bombyces. Eighteen Plates. 8vo. For the Forty-sixth Y'ear, 1889. A Monograph of the British Phytophagous Hymenoptera. By P. Cameron, F.E.S. Vol. III. Seventeen Plates. 8vo. For the Forty-seventh Year, 1890. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by H. T. Staiuton, F.R.S. Vol. IV. The first portion of the Noctuae. Sixteen Plates. 8vo. For the Forty-eighth Year, 1891. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited (in part) by the late H. T. Staiuton, F.R.S. Vol. V. The second portion of the Noctuae. Seventeen Plates. 8vo. 30 LIST OF ANNUAL VOLUMES For the Forty-ninth Year, 1892. A Monograph of the British Phytophagous Hymenoptera. By P. Cameron, F.E.S. Vol. IV. Nineteen Plates. 8vo. (Completing the Work.) For the Fiftieth Year, 1893. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by G. T. Porritt, F.L.S. Vol. VI. The third portion of the Noctuae. Nineteen Plates. 8vo. For the Fifty-first Year, 1894-. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by G. T. Porritt, F.L.S. Vol. VII. The first portion of the Geometrae. Twenty-two Plates. 8vo. For the Fifty-second Year, 1895. The Larvae of the British Butterflies and Moths. By the late W. Buckler, edited by G. T. Porritt, F.L.S. Vol. VIII. The second and concluding portion of the Geometrae. Twenty Plates. 8vo. For the Fifty-third Y^ear, 1896. The Tailless Batrachians of Europe. Part I. By G. A. Boulenger, F.ll.S. Ten Plates. 8vo. ISSUED BY THE KAY SOCIETY. 31 For the Fifty-fourth Year, 1897. The Tailless Batrachians of Europe. Part II. By Gr. A. Boulenger, F.R.S. Fourteen Plates. 8vo. (Completing the Work.) I'lilMEU ill ADLA1UJ AM) SUN, llAKlllOLOMEW CLOSE, E.C., AN1> 20, 11A^0VEU SQUAlilS, W, 3 2044 093 352 292