IIG 



COLUBEID^. 



Genus CHERSYDRUS. 



Olivier, R. Anini. ii, p. 75 (1817). 



Teeth subequal, 12 to 15 in each maxillarv. Head not distinct 

 from neck, small, covered with granular juxtaposed scales ; nostrils 

 close together on the top of tlie snout ; eye very small, with verti- 

 cally sulDcUiptic pupil. Body stout, compressed; scales very 

 small, juxtaposed, rhomboidal, with a short, tubercle-like keel, 

 spinose on the belly ; no ventral shields ; a fold of the skin 

 running along the median line of the abdomen. Tail short, com- 

 pressed, prehensile. 



A single species. 



121. Chersydrus granulatus. 



Hydms granulatus, Schneid. Hist. Ampli. i, p. 243 (1799). 

 Acrnchorchts (/rantilatus, Cantor, Jouni. Asiat. Soc. Bengal, xvi, 



p. 906 (1847). 

 Chersydrus qrarndatus, Giinth. Eept. Brit. Ind. p. 336 (1864) ; 



Boideng. Faun. Brit, lud., Kept. p. 3-55, fia-. (1890) : id. Cat. 



Sn. i, p. 174 (1893) ; S. Flower, P. Z. S. 1899, p. 658. 



No rostral shield, but a series of slightly enlarged shields on 

 each lip, separated from the oral border by a series of minute 



.^.reci^n "7"" '7f3st*^ 



Fig. 38. — Chersydrus (jraindatus. 



scales. About 100 scales round the body, doisals largest. Dark 

 olive or blackish, with pale cross-bands or aunuli, which may 

 become indistinct in the adult. 



Total length 1000 millim. ; tail 100. 



Kivers and coasts from Southern India and Cochin China to 

 New Guinea. Eecorded from Penaiig, Singapore, aud Patani. 



