TE1MEEESURUS. 427 



head dark brown above, pale or yellowish on the sides, with a dark 

 brown temporal streak ; lower parts whitish, spotted or powdered 

 with brown. 



Total length 2 feet ; tail 3-5 inches. 



Hub. This species is known from the Central and Eastern Hima- 

 layas, from 2000 to 8000 feet, and the hills of Assam, Upper 

 Burma, and Yunnan ; Muleyit, Teuasserim, 4500 feet (Beddome) ; 

 Penaug (Stoliczka) ; Singapore. 



526. Triineresurus strigatus. 



Trimeresurus strigatus, Gray, Zool. Misc. p. 49 ; id. Cat. Sn. p. 10 ; 



Gilnth. Kept. B. 1. p. 389, pi. xxiv, fig. I) ; Fayrer, T/wnatoph. 



pi. xvi ; Theob. Cat. p. 224. 

 Trigonocephalus (Cophias) neelgherrieusis, Jerdon, J. A. S. B. xxii, 



1854, p. 524. 



Eostral broader than deep; upper head-scales small, smooth, 

 juxtaposed ; supraocular small, sometimes broken up ; no enlarged 

 internasals ; 8 to 11 scales on a line between the supraoculars ; 

 two or three small postoculars and a subocular, which is separated 

 from the labials by one or two series of scales ; the shield forming 

 the anterior border of the loreal pit distinct from the second labial ; 

 9 or 10 upper labials. Scales feebly keeled, in 21 rows. Yeu- 

 trals 136-145 ; anal entire ; subcaudals 31-49 pairs. Brown 

 above, with dark brown spots, those of the median series often 

 confluent into a zigzag band ; a more or less distinct f|-shaped 

 light marking on the nape ; a dark temporal band; belly whitish, 

 spotted or marbled with grey or black ; end of tail yellow or 

 reddish. 



Total length 19 inches ; tail 2-5. 



Hal. From the Bombay hills to the Anaimalais and Nilgiris, 

 where this snake reaches an altitude of 6000 feet. 



527. Triineresurus jerdonii. 



Trimeresurus jerdonii, Giinth. P. Z. S. 1875, p. 233, pi. xxxiv. 

 Trimeresurus xanthomelas, Giinth. A. M. N. H. (6) iv, 1889, p. 221. 



Eostral as deep as broad or a little deeper than broad ; upper 

 head- scales very small, smooth, juxtaposed ; supraoculars large, 

 larger than the eye ; one or more scales between the internasals, 

 7 to 9 on a line between the supraoculars ; one or two small post- 

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

 labial by a series of small scales ; 7 upper labials, second forming 

 the anterior border of the loreal pit ; a series of large temporals 

 above the labials. Scales strongly keeled, in 21 or 23 rows. Veu- 

 trals 164-187 ; anal entire ; subcaudals 42-67 pairs. Greenish 

 yellow or olive above, mixed with black ; a dorsal series of trans- 

 verse rhoinboidal reddish-brown spots edged with black; head 

 black above, with symmetrical yellow markings ; upper lip yellow, 



