SNAKES OF CEYLON. 



275 



last three or four infralabials. Infralabials : Seven ; the 

 last shorter than the posterior sublinguals, about as broad as 

 those shields, and touching three scales behind. (Fig. 54.) 



YYI 



YL m 



Fig. 54. — Dipsadomorphus trigonatus. 



(X 2J.) 



Costals : At midbody. Vertebrals, breadth of scales about 

 two-thirds their length, and about two-thirds as broad as the 

 ultimate row. Ultimate row, scales nearly as broad as long. 

 In 21 rows to behind midbody, where they reduce by three 



