554 



M. G. A. B0ULEN6ER ON THE 



[Nov. 16, 



greenish-spotted or marbled above ; generally without light vertebral 

 line ; beneath whitish, uniform or black- or olive-spotted. Male 

 with a very broad thumb and a little-developed subgular vocal sac. 



Dimensions. 



a. 



h. 

 c. 

 d. 

 e. 

 tion. 



/• 



cj. Copenhagen. Brussels Museum. 

 5 . Hungary. Brussels Museum. 

 Young. Hungary. Brussels Museum 



2 



?■ 



Egypt. 

 Algiers. 



M. Lataste's collection. 

 Type of JBii/o houlengeri. 



M. Lataste's collec- 



Noukouss, Amou-Daria (Asia). M. Lataste's collection. 

 Tschiuas, Turkestan. 



St.-Petersburg Museum. 



These two last specimens have enormous parotoids and a very large 

 parotoid-like gland on the calf. 



Description. — Compared with that of B. calamita, the head is 

 rather more depressed, the snout more prominent, the canthus ros- 

 tralis more distinct. The nostrils are equally distant from the ante- 

 rior corners of the eyes and from the tip of the snout ; the space 

 between them is rather less than that between one of them and the 

 lip. The eyes are equally distant from the tip of the snout and 

 from the angles of the jaws. The interorbital space is flat and nar- 

 row, its breadth equalling two thirds of the upper eyelid's greatest 

 breadth. The tympanum is always quite distinct, at least in its 

 anterior half, rounded or a little higher than broad ; its transversal 

 diameter equals about half that of the eye. The cleft of the mouth 

 extends to the level of the posterior corners of the eyes. Tlie tongue 

 varies much ; it is generally moderately large, elliptical, about twice 

 as long as broad : in some Asiatic specimens it is very large, pear- 

 shaped, its greatest breadth contained once and a third in its length, 

 covering nearly the whole surface of the mouth ; other specimens 



