428 VIPEBID^. 



with one or nioi'e bhick spot.s, that on the second labial beiiii:; con- 

 stant ; belly yellow, more or less profusely spotted or marbled 

 with black. 



Total lenn;th 81 indues ; tail 5. 



Hah. Ivhiisi llills. This species has recently been rediscovered 

 at Ichaug, on the Yaug-tse-Kiang. 



528. Trimeresurus mucrosqiiamatus. 



Trigonoceplialiis niucrosquamatus, Cantvr, V. Z. H. 18-"^)!), ]). o2. 

 Trimeresurus nuicrosquaniatus, Gi'mth. licpf. JJ. I. p. tJDO; Swinhoe, 

 r. Z. S. 1870, p. 411, pi. xxxi ; Theob. Cot. p. 224. 



Eostral slightly broader than deep ; upper head-scales extremely 

 small, granular, smooth or obtusely keeled ; su])raocular narrow ; 

 3 scales between the internasals, 14 or 15 on a line between the 

 supraoculars ; 4 or 5 minute postoculars and a subocular, w hicli 

 is separated from the labials by two or thi'ee series of scales ; 

 10 or 11 upper labials, second forming the anterior border of the 

 loreal pit. Scales strougly keeled, in 25 or 27 rows. A^entrals 

 200-214(218); anal entire; subcaudals 76-92 pairs. Brownish 

 grey above, with a dorsal series of large blackish spots and a lateral 

 series of smaller ones ; a blackish streak from the eye to the angle 

 of the mouth ; lower parts brownish, spotted with white. 



Total length 3 feet 5 inches ; tail 8-5 inches. 



Hah. Naga Hills, Assam ; Formosa. The above description is 

 taken from specimens from the latter locality. 



529. Trimeresurus cantoris. 



Trigonocephalus cantori, Bli/th, J. A. 6'. B. xv, 18G4, p. 377. 

 Trimeresurus viridis, var. cantori, Blyth, J. A. 8. B. xxix, 1860, 



p. no. 



Trimeresurus labialis, Steindaclm. Nuvara, liept. p. 8(\ pi. iii, tigs. 1 



& 2 ; Theob. Cat. p. 221. 

 Trimeresurus cantoris, StoIiczJir/,J. A. S. i?. xxxix, 1870, pt. 2, p. 222, 



pi. xii, ligs. 3 & 4 ; Theob. I. c. p. 222. 



Kostralas deep as broad; upper head-scales very small, smooth, 

 almost granular ; supraocular shield distinct, narrow, sometimes 

 divided into t\AO ; usually one or two scales between the inter- 

 nasals, 16 on a line between the supraoculars ; two small post- 

 oculars and a subocular, which is separated from the fourth and 

 following labials by t\\o or three rows of scales ; 13 upper labials, 

 first confluent with nasal, second forming the anterior border of 

 the loreal ]nt, fourth largest; temporals small, feebly keeled. 

 Scales rather feebly keeled, in 27 to 31 rows. Yeutrals 174-184 ; 

 anal entire ; subcaudals 55-76 pairs. Pale brown or didl green 

 above, with small dark spots; a whitish streak along the outer 

 series of scales; whitish o)- greenish beneath, uniform or \\ith the 

 base of the ventrals dark ashy or blackish. 



Total ](>ngth 4 feet; tail 6'5 inches. 



Hah. Andaman and Nicobar Islands. 



