378 



SNAKES OF CEYLON. 



these are developed ; 4th largest and touching three or four 

 scales behind. Cuneate : One between the 3rd and 4th 

 infralabials. (Fig. 71.) 



Prr 



Pr S PoJ 



8 



A.S PS 









V/V/ \ 



>C0S 



Fig. 



71.- 



— Po lyodont ognathus caerulescens. 







(X 2.) 









D. Costals. 





