103 



D. CEYLONENSIS, Othr. 



Scales 19. Ventrals 220 + 108. Grey, with black verte- 

 bral spots, each emitting a down-streak ; black head blotch 

 and post-orbital streak. 



Appears to be the Ceylon variety of D. gokool or 

 trigonata. 



Family XVII.— PSAMMOPHID^. 

 Body and tail generally elongate, head very distinct, with 

 the loreal region very concave. Eye moderate, pupil round 

 or vertical. Head-shields normal ; loreal present ; posterior 

 frontals rounded or angulated behind ; supraciliaries promi- 

 nent. Anterior teeth longest, the last grooved. 



Ground snakes approaching the Dipsadidse in form, with 

 ventrals much less than 200. 



PSAMMOPHIS, Boie. 



Body and tail elongate ; long and rather pointed snout. 

 Vertical long and narrow; loreal elongate. Pupil round. 

 Scales smooth, 15-19. Anal bifid. 



P. CONDANAEUS, Merrem. 



Scales 17, lanceolate, with minute apical groove. Ventrals 

 176-182, subc. 80-90. Nasals generally double, sometimes 

 single. Buff or light brown, with a dorsal and ^ lateral 

 mottled black-edged stripe ; belly yellowish, with a very 

 thin lateral black stripe, sometimes a supra and an infra 

 orbital yeUow streak from nose to neck. 

 India, Burma; rare. 



PSAMMODYNASTES, Gunther. 



Body and tail rather stout; snout short, vertical long, 

 anterior frontals very small, nasal single, pierced by the 

 nostril. Pupil erect. Scales 17, short, rhombic, smooth. 

 Anal entire. 



