SNAKES OF CEYLON. 



425 



and 5th, or 4th, 5th, and 6th, touch the eye. Sublinguals : If 

 discernible as such, small and separated by many scales. 

 Infralabials : Five, all touching the labial margin. Cuneate : 

 None. (Fig. 80.) 



a 



Cos 



Fig. 80.— Hydrus platums. 

 (Life size.) 

 D. Costals. 



