199 

 4- Dipsadomorphus nigriceps (Gthr.). 



Dipsas nigriceps^ Gunther, Ann. Nat. Hist. (3) XII 1863, p. 359. 

 Dipsadomorphus nigriceps^ Boulenger, Cat. Sn, III 1896, p. 72. 



Snout longer than eye; rostral more broad than deep, visible 

 from above; internasals shorter than the praefrontals; frontal 

 as long as its distance from the tip of the snout, shorter than 

 the parietals; loreal as long as deep or more long; a prae- 

 ocular, in contact with the frontal or narrowly separated from 

 it; two postoculars; temporals 1 + 2 or 2+3 or 3 + 3; eight 

 upper labials, third to fifth entering the eye; four or five 

 lower labials in contact with the anterior chin-shields; latter 

 often much shorter than the posterior; anterior palatine teeth 

 not much enlarged. Scales in 21 rows, vertebrals much enlarged; 

 ventrals 240 — 263; anal entire; subcaudals 140 — 154. 



Brownish or reddish-grey, uniform or speckled with dark 

 brown, sometimes a series of black spots on the back; head 

 dark or reddish; upper lip light. Lower surface grey, with dark 

 dots. Length of head and body 1240 mm.; tail 410 mm. 



Habitat: Simalur!; Nias!; Mentawei Islands (Siberut!); 

 Sumatra (Upper Langkat, Tandjung Laut in Palembang); Bor- 

 neo (Bongon); Java (Gadok). — Malay Peninsula; Siam. 



5. Dipsadomorphus jaspideus (Dum. & Bibr.). 



Triglyphodon jaspideuni^ Dumeril & Bibion, Erp. Gen. VII 1854, p. 1093. 

 Dipsadomorphus jaspideus^ Boulenger, Cat. Sn. Ill 1896, p. 73. 



Eye as long as snout; rostral more broad than deep, just 

 visible from above; internasals as long as praefrontals; frontal 

 longer than its distance from the tip of the snout, as long as 

 or shorter than the parietals; loreal as long as deep or more 

 deep; a praeocular narrowly separated from the frontal; two 

 postoculars; temporals 24-2; eight upper labials, third to fifth 

 entering the eye; four or five lower labials in contact with 

 the anterior chin-shields; posterior chin-shields as long as the 

 anterior or longer, separated from one another by scales; 

 anterior palatine teeth a little enlarged. Scales in 21 rows, 

 vertebrals much enlarged; ventrals 243 — 266; anal entire; sub- 

 caudals 140 — 166. 



Brown or reddish above, speckled with black or dark brown 

 and with black transverse bars, interrupted on the vertebral 

 line, sometimes indistinct; a series of large, white spots on 



