1896.] BATRACHIANS FROM THD CAUCASUS. 551 
Bie Yg. Yg. 
millim. millim. millim. 
From eye to end of snout 65 5 4:5 
Dy PAM cis ayierw debe « 25 2 15 
From eye to tympanum . 2 1:5 15 
Bigs Mian Bis 5, cei coos: ich ere Asie 12 16:5 155 
Eiirid Bid, oo stare a: udyerd 7 52 49 
EE oe ay sielaio's « o,< See 24 16 15°5 
TRO OG iy Negation 24 16°5 16 
Immer Go0e))- . 2). cketeiee ts 5 3 3 
Inner metatarsal tubercle 2 15 15 
PELODYTES CAUCASICUS. (Plate XXI. fig. 2.) 
Pelodytes caucasicus, Bouleng. Ann. & Mag. N. H. (6) xvii. 
May Ist, 1896, p. 406. 
Vomerine teeth in two slightly oblique transverse groups between 
the choane. 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 the base and 
fringed ; subarticular tubercles strong; a very small inner meta- 
tarsal 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 yocal 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, millim, 
From snout to vent .. 47 | Fromeyetoendof snout 7 
leads « areci er sariats o/anet US iy Me yop eee 3 
Wadth of head Gus. W6e ‘i Rore timp: ssh... <3 25 
Diameter of eye. ..27 4°5' | End limb... .2..... 0 81 
Interorbital widtli! 5.45 PVs aide oe ie 3 fic -n.0 0 se 26 
Brom eye tomoseril a. fi bp Hoow sce cies ey | le oes 56 
This species, described from a single male specimen from 
Mt. Lomis, 7000 ft., received from Dr. Radde, is very closely 
related to the Pelodytes punctatus of Western Hurope, agreeing in 
the extraordinary development and distribution of the nuptial 
horny excrescences on the ventral surfaces in the males, to which 
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 limbs and the slightly different disposition of the vomerine 
