TRIMERESURUS. 429 



530. Trimeresurus purpureomaculatus. 



Trigonocephalus purpureomaculatus, Gray, III. Lid. Zoof. i, pi. Ixxxi 

 ^ (1832). 

 Trimeresurus purpureus, Gray, Zool. Misc. p. 48(1842); Giinth. 



Rept. B. I. p. 387. 



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

 Ti'igonocephalu.spuniceus (nonReinw.), Cantor, J. A. S. B. xvi, 1847, 



p. 1043. 



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

 Trimeresurus porphyraceus, 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. Rept. 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. Mus. p. 76. 

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



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

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

 times broken up ; iuternasals 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 posfoculars 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 100-170 (182) ; anal 

 entire ; subcaudals 55-75 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. 



Hab. Malay Peninsula, Mergui, Andamans and Nicobars. 



Var. bicolor. 



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

 Trimeresurus carinatus, Giinth. 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. 



llab. 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. 



