160 



SNAKES OF CEYLON. 



temporal. Sublinguals : The pairs subequal ; posterior touch- 

 ing the 5th and 6th infralabials. Infralabials : Six, the 6th 

 about as long as the posterior sublinguals, and about twice as 

 broad ; touching three scales behind. (Fig. 34.) 



Pra 



Fig. 34. — Lycodon aulieus. 

 (Natural size.) 



Cosials : Vertebrals nearly as broad as long, three-fourths 

 the breadth of the ultimate row. Last three or four rows 

 increasing in breadth. Ultimate row as broad as long. In 

 17 rows two heads-lengths behind the head, 17 at midbody, 

 and 15 two heads-lengths before the vent ; the reduction in 



