SNAKES OF CEYLON. 



359 



scales behind. Cuneate : One between the third and fourth 

 infralabials. (Fig. 68.) 



zf r 



j* S 



D 



Fig. 68. — Lioselasma spiralis. (Life size.) 

 D. Costals. 



Costals : Longer than broad and imbricate in the anterior 

 cylindrical part of the body ; about as broad as long and 

 imbricate or subimbricate on the compressed posterior part. 



