TRIMEHESITRUS. 429 



530. Trimeresurus purpureomaculatus. 

 Tripfonocephalus purpureomaculatus, Gray, III. Ind. Zool. i, pi. Ixxxi 



Trirneresimis purpureus, Gray, Zool. Misc. p. 48(1842); Gilnth. 



Kept. B. I. p. 387. 



Trimesurus cannatus, Gray, Zool. Misc. p. 48. 

 Tiijronocephalus puniceus (non Reimo.), Cantor, J. A. S. B. xvi, 1847, 



p. 1043. 



Cryptelytrops carinatus, Cope, Proc. Ac. Philad. 1859, p. 340. 

 Trimeresurus porphyracous, Blyth, J. A. S. B. xxix, 1861, p. Ill ; 



Theob. J. Linn. Soc. x, 1868,' p. 64 ; Stoliczka, J. A. S. B. xxxix, 



1870, pt. 2, p. 218; Theob. Cat. p. 222. 

 Trimeresurus andersonii, Theob. Cat. Kept. As. Soc. Mus. 1868, p. 75 ; 



Stoliczka, J. A. S. B. xxxix, 1870, pt. 2, p. 216, and xl, 1871, 



p. 443 ; Fayrer, Thanatoph. pi. xv ; Theob. Cat. p. 224. 

 Trimeresurus obscurus, Theob. Cat. Rept. As. Soc. Mm. p. 76. 

 Trimeresurus monticola, part., Anders. P. Z. S. 1871, p. 194. 



Bostral as deep as broad ; upper head-scales very small, juxta- 

 posed, convex, or obtusely keeled ; supraocular very narrow, some- 

 times broken up ; internasals small, separated from each other by 

 one or two scales ; 12 to 15 scales on a transverse line between 

 the supraoculars ; two or three small postoculars and a subocular, 

 which is separated from the labials by two or three series of scales ; 

 11 to 13 upper labials, the fourth and succeeding small, the first 

 usually fused with the nasal, the second (usually) forming the an- 

 terior border of the loreal pit ; temporal scales keeled. Scales 

 strongly keeled, in 25 or 27 rows. Ventrals 160-170 (182) ; anal 

 entire ; subcaudals 5575 pairs. Dark purplish brown above, 

 uniform or variegated with pale green ; flanks usually pale green 

 or spotted with pale green, or with a series of pale spots on the 

 outer series of scales ; olive or greenish white below, uniform or 

 spotted with black. 



Total length 3 feet 2 inches ; tail 6 inches. 



Hub. Malay Peninsula, Mergui, Andamans and Nicobars. 



Var. Tricolor. 



Trimesurus bicolor, Gray, A. M. N. H. (2) xii, 1842, p. 392. 

 Trimeresurus carinatus, Griinth. Rept. B. I. p. 386 ; Stoliczka, J. A . 



S. B. xxxix, 1870, pt. 2, p. 217 ; Fayrer, Thanatoph. pi. xiii ; 



Theob. Cat. p. 221. 



Uniform grass-green above, with or without a series of whitish 

 spots along the outer series of scales; uniform greenish white 

 beneath. 



JJab. Himalayas, Bengal, Assam, Burma, Sumatra. 



531. Trimeresurus gramineus. 



Russell, Ind. Serp. i, pi. ix, ii, pi. xx. 

 Coluber gramineus, Shaw, Zool. iii, p. 420. 

 Vipera viridis, Daud. Rept. vi, p. 112. 



