Genus of Ceylon Batrachians. 129 



markable cutaneous expansion on the side of the trunk between 

 the fore and hind limbs covered with granule-like tubercles, 

 with a few smaller ones on the tympanum. The smooth 

 portion of the skin of the back is separated from the rough 

 head by a somewhat elevated ridge, caused by a depression of 

 the head, and running in a line across just behind the orbits, 

 and continued into the linear fold behind the tympanum, a 

 good deal like that in the adult Rana Kuhlii figured hj 

 Dr. Giinther, ' Indian Eeptiles,' t. xxvi. fig. A. Limbs of 

 moderate length ; the length of the body two tenths of an inch 

 longer than the distance of vent from heel. Tlie third finger 

 is about one tenth of an inch longer than the fourth, which is 

 slightly longer than the second ; these three fingers form a 

 palmated group in advance of the first, and are very slightly 

 webbed. First finger about half the length of the third. 

 Metatarsus with a small tubercle below the first toe. The 

 fourth toe (including the metatarsiLs) is exactly one half the 

 length of the body; the third toe is slightly longer than the- 

 fifth ; a very sliort web between the first, second, third, and 

 fourtli toes only ; the fifth appears to be quite free. 



Upper pai-ts (in spirits) dark brown, with lighter-coloured 

 spots ; outer parts of hind and fore limbs clouded with brown ; 

 inner sides and the cutaneous expansion coloured dark grey, 

 Avith small brown spots ; belly dark livid colour ; throat suf- 

 fused with brown. 



The following are the dimensions of the only specimen in 

 my possession — length of body 1*8, vent to heel 1*6, hind 

 limbs 2*8, fourth toe (including the metatarsus) 0*9 inches. 



I do not know any frog with which to compare this one in 

 its general appearance and character. It is one of a few set 

 aside from my collection by Major Beddome, when on a visit 

 to Colombo lately, and pronounced by that gentleman to be 

 new to science, and which, from a feeling of delicacy, he 

 declined to accept from me. In searching for its place in the 

 synoptical list of the characters of the genera of Batrachians 

 given in page 400 of Gilnthcr's work on Indian Reptiles, I 

 felt that it could scarcely be removed from the fii-st division, J, 

 of the group of Ground-Frogs ; and it seemed most closely 

 allied to the genus Xenophrys^ of which one species, A", monti- 

 cola, is described and figm-ed by Giinther in the work referred 

 to, p. 414, and plate xxvi. fig. H. 



In the generic and specific descriptions which I have given 

 for this supposed new Ceylon frog, I have followed the exact 

 order of Dr. Glinther's description of the Indian frog above 

 referred to, to facilitate comparisons between the two. 



The generic descriptions of Xenophrys and TrachycephaliLS 

 Ann. d& Mag. N. Hist. Ser. 4. Vol. xv. 9 



