SNAKES OF CEYLON. 



329 



sublinguals, 4th largest and in contact with two scales behind. 

 Ouneate : None. (Fig. 62.) 



Prf Pr g Po 



Pa 



Cos 



Fig. 62. — Microeephalophis gracilis. 



(X 2.) 



D. Costals. 



Costals : Longer than broad, and imbricate on the slender 

 anterior part of the body ; as broad as long, hexagonal and 

 juxtaposed on the compressed part of the body ; with 



