128 Mr. W. Ferguson on a new 
XVI.—Description of a supposed new Genus of Ceylon 
Batrachians. By W. Ferauson, F.L.S.* 
'TRACHYCEPHALUS. 
Fingers and toes tapering, very slightly webbed. Lower 
jaw with marked but not prominent apophyses, with a small 
fang-like process in the centre; the internal openings of the 
nostrils and EKustachian tubes small; tympanum small, but 
conspicuous. Small parotoids present? The transverse pro- 
cesses of the sacral region dilated. (Maxillary and vomerine 
teeth present.) Vomer with two separate toothed prominences. 
A toothed prominence on each side between the choane and 
the jaw. The upper eyelid well developed, but not prominent. 
A cutaneous fold between the fore and hind limbs. 
Trachycephalus ceylanicus. 
Head very broad, much depressed, and very short in pro- 
portion to its breadth, the upper lip having a marked rim all 
along it, forming nearly a section of a circle, somewhat convex 
in front; the whole of the upper part of the head, including 
the eyelids and the tympanic region, covered with small, 
irregular, granular tubercles. Snout considerably pointed, 
with its extremity prominent and perpendicularly truncated, 
and very slightly overreaching the cleft of the mouth. 
Canthus rostralis obtuse ; loreal region concave, with a smooth 
groove running through it from the lower part of the orbit to 
the nostril. Occiput deeply concave. Nostril slightly below 
the extreme end of the canthus rostralis and the snout. Eye 
of moderate size, prominent, but concealed from above by the 
eyelid. Tympanum distinct, one half as large as the eye. 
A linear fold runs from the hinder edge of the orbit over the 
tympanum towards the armpit. Cleft of the mouth twice 
as broad as long; tongue not large, broadly but not deeply 
notched behind, attached to the gullet nearly its whole length. 
There is a toothed prominence on each side of the vomer, a 
little lower than the openings of the nostrils, and running in 
a straight line across the jaw. Vomerine teeth on long ridges 
gradually rising from the inner angle of the choane, running 
back and convergent behind, terminating in toothed promi- 
nences. Skin of the back, belly, throat, legs, and inside of 
fore limbs smooth. The whole of the upper part of the head 
{including the eyelids), the front of the fore limbs, and a re- 
* From the ‘Journal of the Ceylon Branch of the Royal Asiatic 
Society,’ 1874, Part 1. Communicated by the Author. 
