( xxxiii ) 



DiPSAS, 



Body compressed. Head very distinct from neck. 



Scales in 17 — 19 rows. Four rows of spots 

 down the back * .r. D. multimaculata. 



Scales in 19 rows. Dark gray finely pow- 

 dered with brown . . , D. Barnesii. 



Scales in 17 — 21 rows. Reddish brown. 

 Anal bifid . . . D. hexagonota. 



Scales in 17 — 19 rows. Uniform ochraceous. D, ochracea. 



Scales in 19 — 21 rows. Yellowish with a 

 black edged pale zig-zag band down the 

 back ... D. trigonata. 



Scales in 19 — '21 rows. Light brown with 

 a double row of black dorsal spots ... D. Ceylonensis. 



Scales in 21 rows. Green. Anal entire ... D. bubalina. 



Scales in 21 rows. A straight yellow ver- 

 tebral line . . . D Qokool. 



Scales in 21 rows. Reddish spotted with 

 brown and black in longitudinal and 

 transverse rows ^ . . . D. boops. 



Scales in 25 — 27 rows. Nostril rounded, 



below prsefrontal . . . D. Forsteni. 



Family LYCODONTID^. 



Head depressed. Eye small. An enlarged maxillary tooth in 

 front. 



a. — Scales smooth. 



Ltcodon. 



Loreal present. Two nasals. 



One loreal. Prseocular in contact with 



vertical ... L. aulicus. 



One loreal. Prseocular not in contact with 



vertical ... L, striatus. 



One loreal pointed behind ... L. jara. 



Two loreals ... Ij. Anamallensis. 



5 



