500 



SNAKES OF CEYLON. 



long as the anterior, touching the 4th infralabial. Infra- 

 labial : Four ; 4th largest, about as long as the posterior- 

 sublinguals, but twice as broad as those shields, and touching 

 two scales behind. (Fig. 90.) 



Fig. 90. — Callophis trimaculatus. 

 (X 3.) 



Costals : Vertebrals, breadth of scales about three -fourths 

 their length, and about three-fourths those of the ultimate 

 row. Last two rows gradually increasing in breadth. 

 Ultimate row broadest, its scales about as broad as long. In 

 13 rows in the whole body length. Ventrals : 228 to 274 

 rounded. Anal : Divided. JSubcaudals : 24 to 36. 



Dentition. — From one skull in my collection. Maxillary : 

 Postnodal, 2 or 3. Palatine : 6 to 7. Pterygoid : 4 (?) to 6. 

 Mandibular : 8 to 9. • 



