10. TROPriiONOTirs. 249 



faintly or feebly keeled. 177-235 ventrals; anal divided; sub- 

 caudals 75-107. Olive-brown above, with small black spots; 

 frequently two black parallel lines or an elliptic marking on the 

 nape ; a light, black-edged streak on each side of the head, or a 

 black line from eye to gape ; belly yellowish, with or without 

 blackish dots ; frequently a black lino or scries of elongate blackish 

 spots along each side of the belly ; lower surface of tail frequently 

 mottled with blackish ; throat sometimes black. 



Total length 900 millim. : tail 230. 



Himalayas and Khasi Hills. 



a-d. cS (V. 232 ; C. 92) Cashmere, 10,000 feet. T. C. Jerdon, Esq. [CI. 



&$(V.217,212,204; 



C. 88, 75, 8G). 



e-f. c? (V. 206, 202; Nepal. B. H. Hodgson, Esq. 



C. 102, 100). [P.]. 



ff. (S (V. 206 ; 0. 90). Sikkim. Messrs. v. Schlagin- 



tweit[C.l._ (Type of 

 //. sieboldii.) 



h-i. S (V. 214, 177; Sikkim. Messrs. v. Schlagin- 



0. 86, 92). tweit [C.]. 



h-l. S (V..202; C. 95) Sikkim. Sir J. Hooker [P.]. 



& $(V. 184; C. 98). 



m-n. S (V. 196, 193 ; Darieeling. T. C. Jerdon, Esq. [P.]. 



C. 107, ?). 



53. Tropidonotus tigrinus. 



Tropidonotus tigrinus, Boie, Isis, 1820, p. 205 ; Schleg. Phijs. Serj). 



ii. p. 315 (1837), awf? Faun. Japon., Rept. p. 85, pi. iv. (1838); 



Gilnth. Cat. p. 71 (1858), and Rept. Brit. Ind. p. 271 (1864) ; 



Sfmuch, Schl. Russ. R. p. 176 (1873). 

 Amphiesma tigrinum, Dum. l^- Bibr. vii. p. 732 (1854) ; Jan, Arch. 



Zool. Anat. Phys. iii. 1865, p. 233, and Icon. Gen. 29, pi. i. fig. 2 



(1868). 

 Tropidonotus lateralis, Berthold, Gottiny. Nachr. 1859, p. 180 ; Jan, 



II. cc. p. 220, Icon. 25, pi. v. fig. 1 (1867). 

 orientalis, Giinth. Proc. Zool. Soc. 1861, p. 391, and Ann. 



^- May. N. H. (3) ix. 1862, p. 59, pi. ix. tig. 3 ; Sfrauch, Voy. 



Przeivalski, Rept. p. 48 (1876J. 



Eye large. Rostral broader than deep, just visible from above ; 

 internasals as long as broad, as long as or a little longer than the 

 praefrontals ; frontal onco and one third to once and a half as long 

 as broad, as long as its distance from the end of the snout, shorter 

 than the parietals ; loreal as long as deep or deeper ; two prte- and 

 three or four postoculars ; temporals 1 + 2 (rarely 2 + 2); seven 

 upper labials, third and fourth entering the eye ; four or five lower 

 labials in contact with the anterior chin-shields, which are shorter 

 than the posterior. Scales strongly keeled, of outer row smooth or 

 keeled, in 19 rows. Ycntrals 147-160 ; anal divided ; subcaudals 

 55-84. Olive above, with more or less distinct black cross bands 

 or large alternating spots ; a series of light spots may be present on 

 each side of the back ; a series of black and red spots on each side 

 of the neck ; upper lip yellowish, the sutures between the shields 



