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Show Yg. nillim. 5 2 1-5 16-5 52 16 16-5 3 1-5 Tg. millim. 4-5 1-5 1-5 15-5 49 15-5 16 3 1-5 1896.1 BATRACHIANS F R O M THE CAUCASUS. 551 8- millim. From eye to end of snout 6-5 Tympanum 2'5 From eye to tympanum . 2 Fore limb 12 Hind limb 74 Tibia 24 Foot 24 Inner toe 5 Inner metatarsal tubercle 2 PELODYTES CAUCASICUS. (Plate XXI. fig. 2.) Pelodytes caucasicus, Bouleng. Ann. & Mag. N. H. (6) xvii. May 1st, 1896, p. 406. Vomerine teeth in two slightly oblique transverse groups between the choanse. Head slightly broader than long; snout subacumi-nate, as long as the diameter of the orbit, with moderately distinct canthus ; tympanum feebly distinct, two thirds the diameter of the eye. First finger as long as second; toes webbed at tbe base and fringed; subarticular tubercles strong; a very small inner metatarsal tubercle. The tibio-tarsal articulation reaches the tip of the snout. Body covered with strong warts, some of which are confluent into longitudinal folds ; a parotoid-like fold above the tympanum. Olive above, white beneath, all the warts covered with a black horny layer in the male. Male with an internal vocal sac; the fore limbs very strong, with rugose black plates as in P. punc-tatus; similarly with black rugosities round the lower jaw, on the breast, belly, and under the limbs, especially on the subarticular tubercles. millim. From eye to end of snout 7 Tympanum 3 Fore limb 25 Hind limb 81 Tibia 26 Foot 56 This species, described from a single male specimen from Mt. Lomis, 7000 ft., received from Dr. Eadde, is very closely related to the Pelodytes punctatus of Western Europe, agreeing in the extraordinary development and distribution of the nuptial horny excrescences on the ventral surfaces in the males, to wdiich attention was drawn by me in 1881 (Bull. Soc. Zool. France, 1881, p. 73, fig.). Here, however, the excrescences extend also to the warts and ridges of the upper surfaces, so that P. punctatus must be regarded as the Batrachian in which these temporary attributes of the males reach their highest development. P. caucasicus is distinguished from its congener in the longer hind linibs and the slightly different disposition of the vomerine From snout to vent Width of head Diameter of eye Interorbital width .. From eye to nostril millim . 47 .. 15 . 16 .. 4-5 .. 4-5 . 4 |