426 TIPEllIJDiE. 



SynojJsis of Indian, Ccylonese, and Burmese Species, 



A. Scales in 21 or 23 rows ; 5 to 11 scales in a 



transverse series between supraoculars ; tail 

 not prehensile. 



a. Supraoculars large, separated by 5 to 8 series 



of scales ; scales feebly keeled T. monticola, p. 426. 



b. Supraoculars small, sometimes broken up, 



separated by 8 to 11 series of scales ; scales 



feebly keeled T. strif/alus, p. 427. 



c. Supraoculars large ; scales strongly keeled. . T. jerdunii, -p. 427 . 



B. Scales in 25 to 31 rows; 12 to 10 scales in a 



transverse series between the supraoculars : 

 tail sliffhtlv prehensile. 



a. Ventrals 200-218 ; subcaudals 76-92 ; scales [p. 428. 



strongly keeled, in 2-5 or 27 rows. ....... T. mucrosquanudus, 



b. Ventrals 174-184 ; subcaudals 55-76 ; scales 



rather feebly keeled, in 27 to 31 rows. ... T. cantoris, p. 428. 



c. Ventrals 160-182; subcaudals 53-75 ; scales [p. 429. 



strongly keeled, in 25 or 27 rows T.purpurcomacidatus, 



C. Scales in 13 to 23 rows ; tail prehensile. 



a. 7 to 13 scales in a transverse series between 



supraoculars ; scales in 19 to 23 rows. 

 a . Subcaudals 53-75 ; temporal scales smooth. T. (jramineus, p, 429. 

 b' . Subcaudals 44-58 ; temporal scales ob- [p. 430. 



tusely keeled T. anamallensis, 



b. 4 or 5 scales in a transverse series between 



supraoculars ; scales in 17 or 19 rows ; last [p. 431. 



ventral shield notched or divided T. tiiyviiocepludus, 



c. Upper head-scales ver}' large, shield-like ; 



scales in 13 or 15 rows T. niacrulcjns, p. 431. 



525. Trimeresurus monticola. 



Parias nu^culata, Gray, A. M. N. H. (2) xii, 1853, p. 392 {nee Gray, 



1842). 

 Trimeresurus monticola, GUnth. Bept. B. I. p. 388, ])1. xxiv, fig. ]}; 



S/cliczA-a, J. A. S. B. xl, 1871, p. 445 ; Fayrer, Thunatoph. pi. xv ; 



Theob. Cat. p. 220 ; Anders. An. Zool. Bes. Yunnan, p. 832, 



pi. Ixxvi, iigs. 4 & 5. 

 Trimeresurus convictus, StoHczka, J. A. S. B. xxxix, 1870, pt. 2, 



p. 224, ])1. xii, fig. 1 ; Anders. P. Z. S. 1871, p. 196. 

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



Snout very short ; eye very small. Eostral as deep as broad ; 

 upper head-scales small, subimbricate, smooth ; supraocular large, 

 more than tx^ice the size of the eye ; interuasals separated from 

 each other by oue to three scales, rarely iu contact; 5 to 8 scales 

 on a transverse line between the supraoculars ; 3 or 4 ro\\s of scales 

 between the eye and the labials ; 8 or 9 upper labials, second usually 

 forming the anterior border of the loreal pit; temporal scales smooth. 

 Scales feebly keeled, iu some specimens almost smooth, in 21 to 23 

 rows. Vcnti-als 132-156; anal entire; subcaudals 21-57 pairs. 

 Brown or yellowish above, with one or two dorsal series of large 

 squarish dark brown spots and a lateral series of smaller spots ; 



