28 



SNAKES OF CEYLON. 



species. JSubcaudals : Divided ; 5 to 15 in number. Caudal 

 shield : Enlarged ; with two small spines placed on a 

 transverse ridge. (Figs. 10 and 11.) 



C.S 



Spc 



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

 (X 2.) 



COS 



Ven ) 



Fig. 11. — Anal region of Silybura. 



Dentition. — From the skulls of five species in my 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 . 



