2S SNAKES OF CEYLON - 



species. Rithr/i-wlals : Divided; 5 to 15 in numbor. Cavdal 

 shield,: Enlarged; with two small spines placed on a 

 transverse ndge. (Figs. 10 and 11.) 



C.S 



Spc 



Fro. 10. — Upper part of tail of Silybura. 

 (X 2.) 



' !•■ '^ITT-' 



YV.-^'V^ 



•-/. 





-Xr?rS'^'-' 





cos' 



y\\y:yMK\ 



.An 



Sub 



Fig. 11.- — Anal region of Silybura. 



Dentition. — From the skulls of five species in ray collection. 

 Maxillary: Anododont, kumatodont. Palatine: Edentulous. 

 Pterygoid: Edentulous. Mandibular: Anododont, kumata- 

 dont. 



Distribution. — Hills of Southern India and Ceylon. The 

 genus contains twenty-two species, of which one only occurs 

 in Ceylon ; viz., melanogaster . 



