300 



SNAKES OF CEYLON. 



internasals ; 2nd and 3rd the prefrontal ; 4th and 5th the eye ; 

 7th the temporal ; the 4th divided into two or three parts. 

 Sublinguals : Posterior rather longer than the anterior, 

 touching the 4th and 5th infralabials. Injralabials : Five ; 

 the 4th and 5th large ; 5th about as long as the posterior 

 sublinguals, and projecting behind them, about twice the 

 breadth of those shields, touching two scales behind. (Fig. 58.) 



Pr Po 



N \ PrfA \ L-A 



Fig. 58. — Dryophis mycterizans. 



(Life size.) 



Costals : Vertebrals enlarged, the breadth of the scales 

 about three-fourths their length, and rather less than those 

 of the ultimate row. Breadth of the oblique scales rather less 

 than half their length. Ultimate row enlarged, the breadth 



