544 



SNAKES OF CEYLON. 



Lepidosis. — (a) Typical — Rostral : Touches six shields ; the 

 rostro -labial sutures subequal to the rostro -nasals, and about 

 twice the rostro -internasals. Internasals : Two, small ; 

 divergent posteriorly. Supraoculars : Replaced by small 

 scales. Nasals : Entire or divided into two by a suture 

 running back from the nostril ; in contact with the rostral 

 and the 1st labial. Suboculars : Two rows of scales intervene 

 between the eye and the supralabials. Supralabials : Ten to 

 twelve ; the 4th largest ; none touching the eye. Infra- 

 labials : Four ; the last touching three or four scales behind. 

 Sublinguals : One pair, touching four infralabials. (Fig. 93.) 



Fig. 93. — Echis carinatus. 

 (x |.) 



