8 



SNAKES OF CEYLON. 



divided ; the upper suture from the nostril about half the 

 lower which passes to the 2nd supralabial. Praeocular : Well 

 developed ; widely separated from the 2nd supralabial. 

 Ocular : Well developed. Subocular : Present ; touching the 

 2nd, 3rd, and 4th supralabials. Temporals: Two. Supra- 

 labials : Four. 



Costals : In 18 rows in the whole body. 



Prf F 



Prp Pop 



B 



1 2 



3 4 



Fig. 1.— Typhlops mirus. 

 (After Gunther.) 



