ii6 



Habitat: Mentawei Islands (Sipora); Sumatra (Lower 

 Langkat); Natuna Islands; Borneo (Sarawak, Sandakan, Sama- 

 rinda!); E. Java (Sumber Arum!). — Penang; Malay Penin- 

 sula; Siam. 



Arboreal. 



49. Dipsadoides Annandale. 



(Annandale, Journ. Asiat. Soc. Bengal I p. 212, 1905). 



Head distinct from neck; eye large; pupil round; nasal 

 undivided. Maxillary teeth 6, followed by a pair of moderate, 

 almost vertical grooved teeth after an interspace; mandibular 

 teeth subequal. Body strongly compressed, covered with 21 

 rows ') of scales with pits, the vertebral row enlarged; ventrals 

 keeled on each side. Tail slender; subcaudals in two rows. 



Distribution. Indo-Australian Archipelago. 



A single species. 



I. Dipsadoides decipiens Annandale. 



Dipsadoides decipiens^ Annandale, Journ. Asiat. Soc. Bengali 1905, p. 213, fig. 3. 



Head small, flattened; snout short; eye prominent, almost 

 as long as the snout; nostril large, directed backwards. Rostral 

 more broad than deep, just visible from above; internasals 

 larger than praefrontals; frontal more long than broad, as long 

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

 parietals; praeocular large; postocular small; supraocular very 

 large; loreal more deep than long; temporals 2 + 2; eight 

 upper labials, third to fifth entering the eye; five lower labials 

 in contact with the anterior chin-shields; latter followed by 

 a second large pair, which are separated from one another ^). 

 Scales narrow, oblique, in 21 rows, dorsal row enlarged; 

 ventrals 258; anal entire; subcaudals 152. 



Pale brown above, spotted and marbled with dark brown 

 and dull yellow, and with irregular dark bars; head marbled 

 with dark brown and with dark brown spots. Lower surface 

 dull yellow, marbled posteriorly with dark brown; chin and 

 throat spotted with dark brown. Length of head and body 

 603 mm.; tail 265 mm. 



i) In the original description: 19 rows. 



2) In the description : both in contact with their neighbours. 



