—_-) 
148. pIPSADOMORPHUS. 65 
Anterior palatine teeth scarcely larger than the posterior; anterior 
mandibular teeth feebly enlarged. Mostral a little broader than 
deep, scarcely visible from above; internasals broader than long, 
much shorter than the prefrontals; frontal as long as broad or 
slightly longer than broad, as long as its distance from the end of 
the snout, shorter than the parietals; loreal as long as deep or 
deeper than long; one or two preoculars, not extending to the 
upper surface of the head; two postoculars; temporals 2+3,; 
eight upper labials, third, fourth, and fifth entering the eye; four 
or five lower labials in contact with the anterior chin-shields ; 
posterior chin-shields as long as the anterior and in contact with 
each other. Scales in 21 rows, the vertebral row strongly enlarged. 
Ventrals 224-225; anal entire; subcaudals 87-94. Yellowish 
brown above; head with an arrow-shaped brown, black-edged 
marking, longitudinally bisected; a black streak on each side of the 
head, passing through the eye; a yellowish vertebral streak; a 
series of erect Y-shaped markings on each side of the back; lower 
parts yellowish, with a series of brown spots along each side. 
Total length 830 millim. ; tail 170. 
Bengal, Assam, Pinang. 
a. Q (V. 224; C. 94). Bengal. Gen. Hardwicke[P.]. (Type.) 
b. 2 (V. 225; C. 87). Pinang. Dr. Cantor [C.]. 
4. Dipsadomorphus hexagonotus. 
Dipsas hexagonotus, Blyth, Journ, As. Soc. Beng. xxiv. 1856, p. 360 ; 
Stoliczka, Journ. As. Soc. Beng. xxxix. 1870, p. 198, pl. xi. fig. 4, 
and xl. 1871, p. 489; Theob. Cat. Rept. Brit. Ind. p. 195 (1876) ; 
Bouleng. Faun. Ind., Rept. p. 361 (1890). 
ochracea, Giinth. Ann. § Mag. N. H. (4) i. 1868, p. 425; 
Theob. Journ. Linn. Soe. x. 1868, p. 53, and 1. c. p. 196. 
-—— hexagonata, part., Anders. Proc. Zool. Soc. 1871, p. 185. 
Anterior palatine teeth scarcely longer than the posterior ; 
anterior mandibular teeth considerably enlarged. Rostral broader 
than deep, just visible from above; internasals broader than long, 
shorter than the preefrontals ; frontal a little longer than broad, as 
long as its distance from the end of the snout, considerably shorter 
than the parietals ; loreal as long as deep or deeper than long; one 
preocular, not reaching the upper surface of the head; two post- 
oculars ; temporals 2+3; eight (rarely nine) upper labials, third, 
fourth, and fifth (or fourth, fifth and sixth) entering the eye; four 
or five lower labials in contact with the anterior chin-shields, which 
are as long as or a little shorter than the posterior. Scales in 19 or 
21 rows, vertebral row strongly enlarged. Ventrals 218-250; 
anal entire ; subcaudals 94-140. Dusky grey, reddish, or ochraceous 
above, uniform or with ill-defined blackish transverse lines ; a more 
or less distinct dark streak from eye to gape; lower parts yellow, 
uniform, or clouded with pale brownish in the young. 
Total length 1050 millim. ; tail 200. 
_ Eastern Himalayas, Bengal, Burma, Andamans. 
VOL. III. F 
