251 



nostril; frontal as long as its distance from the rostral or the 

 tip of the snout, much shorter than the parietals; one prae- 

 and two postoculars; a single temporal; six upper labials, third 

 and fourth entering the eye; four lower labials in contact 

 with the anterior chin-shields; latter as long as the posterior. 

 Scales in 13 rows; ventrals 303 — 320; anal divided; sub- 

 caudals 21 — 30. 



Pale brown or reddish above, with three dark longitudinal 

 lines passing through round, dark brown or black spots, the 

 lateral spots alternating with the median; two large black 

 blotches across the tail, the first at the base of the tail; two 

 outer rows of scales dark with a yellow longitudinal streak. 

 Lower surface barred black and yellow. Length of head and 

 body 705 mm.; tail 35 mm. 



Habitat: Sumatra (Labuan in Deli). — Singapore; Penang; 

 Malay Peninsula!; Bangkok. 



Rare. 



61. Doliophis Girard. 



(GiRARD, Proc. Ac, Philad. p. 182, 1857). 



Head small, not distinct from neck; eye small; pupil round; 

 nostril between two nasals; loreal absent. Maxillary teeth 2 

 grooved fangs; mandibular teeth subequal. Poison glands ex- 

 tending along each side of the body for about one third of 

 its length, thickening and ending in front of the heart, which 

 is shifted far back. Body round, long, covered with smooth 

 scales without pits, in 13 rows; ventrals rounded. Tail short; 

 subcaudals in two rows. 



Distribution. Burma; Cochin China; Malay Peninsula and 

 Archipelago. 



Key to the Indo-Australian species. 



A. Subcaudals 34—53 l. D. bivirgatus p. 251. 



B. Subcaudals 15 — 33 1. D. intestiiialis p. 253. 



I. Doliophis bivirgatus (Boie). 



Elaps bivirgatus^ Boie, Isis, 1827, p. 556. 



Doliophis bivi^-gatus^ Boulenger, Cat. Sn. Ill 1896, p. 400 (s. syn.). 



Rostral slightly more broad than deep; frontal large, as 

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



