8 COLUBBID.fi. 



slightly enlarged and six-sided ; ventrals rounded. Tail long ; 

 subcaudals in two rows. 



Burma, Malay Peninsula and Archipelago. 



1. Xenelaphis hexagonotus. 



Coluber hexahonotus, Cantor, Cat. Mai. Rept. p. 74 (1847). 

 Coryphodon sublutescens, Dum. fy Bibr. vii. p. 187 (1864). 



hexanotus, Giinth. Cat. p. 110 (1858). 



Xenelaphis hexahonotus, Giinth. Kept. Brit. Ind. p. 261, pi. xxi. 



fig. C (1864). 



Ptyas hexagonotus, Theob. Cat. Rept. Brit. Ind. p. 168 (1876). 

 Xenelaphis hexagonotus, Bouleng. Faun. 2nd., Rept. p. 336 (1890). 



Rostral broader than deep, visible from above ; internasals as long 

 as or a little longer than the praefrontals ; frontal once and one 

 third to once and a half as long as broad, as long as its distance 

 from the end of the snout, a little shorter than the parietals ; loreal 

 nearly as long as deep ; one prseocular, with a rather large sub- 

 ocular below it, wedged in between the third and fourth upper 

 labials ; two postoculars, with a large subocular below, separating 

 the eye from the fifth and sixth labials ; a third subocular occa- 

 sionally present, separating the eye altogether from the labials; 

 temporals 2+2 ; normally eight upper labials, fourth entering the 

 eye ; four or five lower labials in contact with the anterior chin- 

 shields, which are as long as the posterior. Scales smooth, in 17 

 rows. Ventrals 185-198 ; anal divided ; subcaudals 140-179. 

 Brown above, with black cross bands, which become indistinct with 

 age, on the anterior half of the body ; old specimens showing mere 

 traces of the outer ends of these bands ; lower parts uniform 

 yellowish. 



Total length 1650 millim. ; tail 600. 



Burma, Malay Peninsula, Borneo, Sumatra, Java. 



a. Yg. (V. 188; C. 148). Pinang. Dr. Cantor. (Type.) 



b, c. <$ (V. 187 ; C. 140) Singapore. Gen. Hardwicke [0.1. 

 & ? (V.198;C. 140). 



d. <$ (V. 191 ; C. 149). Singapore. W. T. Blanford, Esq. [P.]. 



e. $ (V. 190; C. 144). Borneo. L. L. Dillwyn. Esq. [P.]. 

 /. c? (V. 186; C. 179). Borneo. Sir J. Brooke HP.]. 



g. c? (V. 190; C. ?). Rejang R., Sara- Brooke Low, Esq. [P.]. 



wak. 



h. cJ (V. 187; C. 173). ? Dr.Bleeker. (Dendrophis 



dumerilii, Blkr.) 



. Yg. (V. 192; C. 175). ? Dr.Bleeker. (Ablabes 



polyhemizona, Blkr.) 

 k. Skull. Sarawak. 



57. DKYMOBIUS. 



Coluber, part., Schleg. Phys. Serp. ii. p. 126 (1837) ; Dum. $ Bibr. 



Mem. Ac. Sc. xxiii. 1863, p. 456. 

 Herpetodryas, part., Schleg. 1. c. p. 173 ; Dum. & Bibr. Erp. Gen. vii 



