300 



SNAKES OF CEYLON. 



interuasals ; 2nd and 3rd the prsefrontal ; 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. Infralabials : 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 



• \ S / r 



o s 



Fig. 58. — Dryophis mycterizaus. 

 (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 



