264 



SNAKES OF CEYLON. 



long as the frontal, about one-third the breadth of the frontal 

 along a line connecting the centres of the eyes. Nasal : Entire. 

 Loreal : One. Prseocular : One ; not reaching the top of the 

 head. Postocular : Two. Temporal : One. Supralabials : 

 Eight ; the 1st touching fche nasal, and the 4th the eye. 

 Sublinguals : Two pairs ; the posterior shorter, touching the 

 4th and 5th infralabials ; quite separated by small scales. 

 Infralabials : Five ; the 51 h largest,' and touching two or three 

 scales behind. (Fig. 53.) 



T Po 



Lor 



Fig. 53. — Gerard ia prevostiana, 



(X ]£.) 



