128 ifr. W. Ferguson on a new 



XVI. — Description of a supposed new Oemis of Ceylon 

 Batrachians. By W. FERGUSON, F.L.S.* 



TUACHYCEPHALUS. 



Fingers and toes tapering, very sliglitly wcLbed. Lower 

 jaw with marked but not })rominent ajx^piiyscs, with a small 

 tang-like process in the centre; the internal openings of the 

 nostrils and Eustachian 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 sc])arate toothed prominences. 

 A toothed prominence on each side between the choanje and 

 the jaw. The u])per eyelid well developed, but not prominent. 

 A cutaneous fold between the fore and hind limbs. 



Trachyceplialus ceylanicus. 



Head very broad, much depressed, and veiy 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 oveiTcaching the cleft of the mouth. 

 Canthus rostralis obtuse ; loreal region concave, with a smooth 

 groove ininning 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 lialf 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 ])ut 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 choanal, 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. 



