8 KEPTILES. 



Tent. 155. Vipera viridis, Z)aMf/. Rept. vi. 112. Bodroo Pam, 

 Russell, Ind. Serp. i. t. 97, t. 20. Coluber gramineus, Shaw, Zool. 

 iii. 420. Trisronocephalus viridis, Schlegel, P. S. 554, t. 19, /. 12, 

 13. Voy. Coq.\\.2, 18. 



Head-shields smooth ; scales of the body obscurely keeled. 



a. In spirits. Half grown. India. 



h. In spirits. Adult. India. 



c, d. Young and very young. Affghanistan. 



ff Superciliary shield linear, rudimentary. 



2. The White-lipped Trimesurus. Trimesurus albolabris, 

 Gray, Zool. Misc. 48. 



Green ; upper and lower lip, the upper part of the supra-abdo- 

 minal row of scales, and the lower edge of the row above them, 

 white: belly yellowish green, bluish on the sides: head-shields 

 smooth, convex ; scales obscurely keeled. 



a. In spirits. Adult ? China. Presented by John Reeves, Esq. 

 h. In spirits. Younger. China. Presented by John Reeves, Esq. 



3. The Keeled Trimesurus. Trimesurus carinatus, Gray, 

 Zool. Misc. 48. 



Green? scales large, strongly keeled, the supra-abdominal 

 series with a white central streak ; head-shields convex, rounded. 



a. In spirits. Young. India. Presented by James Inskip, Esq. 



4. The PuEPLE Trimesurus. Trimesurus purpureus, Gray, 

 Zool. Misc. 48. Trigonocephalus purpureo-maculatus, Gray, Illust. 

 Ind. Zool. t. . Trig. Wagleri, var., Schlegel, P. S. 543. 



Purple (in spirits red-brown) ; lateral streak and beneath whit- 

 ish ; head-shield convex, smooth. 



a. In spirits. Adult. Singapore. Presented by General Hard- 

 wicke. 



** The second labial plate much smaller than the third, with a square 

 shield above it, tvhich forms the front edge of the suborbital pit : 

 head large : back spotted or banded, without any continued pale 

 lateral line. Tropidolsemus, Wagler. 



5. The Spotted Trimesurus. Trimesurus maculatus, Gray, 

 Zool. Misc. 48. 



Green, with a series of small, distant, brown-backed spots on 



* 



