SNAKES. 15 



ff Head large, triangular, cordate. Trigonocephalus. 



4. The OuLAR DoNDA. Trigonocephalus rhodostoma, Reimv. 

 I&is, 1827, 561. Wagler, Amph. 174. Schlegel, P. S. ii. 547, t. 20, f. 

 1 — 3. Abbild. 19, t. 19, auimal aod skull. Nova Act. N. C. xiv. 

 t. 16, /. 4—9, slcull. Seba, ii. t. 68, /. 6, young (bad). Coluber, 

 No. 21, Russell, Ind. Serp. ii. ^ 21 (good). Vipera praetextata, 

 Gravenh. Trigonocephalus praetextatus, Hemprich. Fitz. N. Class. 

 62. 



Red-brown, with rhombic spots ; sides brown, spotted ; beneath 

 white : head large, triangular ; crown flat, with a dark-edged whitish 

 streak on each side. 



a. In spirits. Java. From the Leyden Museum. 



** End of nose with small scales in front. Hypnale. 



5. The Carawilla. Trigonocephalus Hypnale, Wagler, Syst. 

 174. Schlegel, P. S. ii. 550, t. 20, /. 6, 7. Cophias Hypnale, Mer- 

 rem. Tent. 155. Coluber Nepa, Laur. Syn. 97. Seba, Thes. i. t. 19, 

 /. 7; ii. t. 55, f. 1 and 4. Scheuch. P. S. t. 749, /. 11. Carawilla, 

 Davy, Ceylon, 85, t. 2, /. 1 . Cop., Russell. Ind. Serp. ii. t. 22 (var. 

 muzzle blunt). Trimesurus? Ceylonensis, Gray, Zool. Misc. 48. 



Scales keeled ; lips brown, white spotted: brown, sides darker 

 and varied; tail brown, cross-banded: head brown, marbled with a 

 broad white streak on each side, extending down the back of the 

 neck, which is streaked with brown ; nose more or less produced, 

 (" upper surface covered with small scale-like shields." Schlegel.) 



a. In spirits. Ceylon. Presented by R. Templeton, Esq, 



6. The Zara. Trigonocephalus Zara. 



Brown ; slightly brown varied, minutely punctated below ; side 

 of the neck dark brown, white varied : head with a narrow white 

 streak on the upper part of the temple, and a broader white streak 

 on the lower side of the neck ; lips brown, with one or two small 

 white spots behind. 



a. In spirits. Singapore. From Mr. Argent's collection. 



b. Subcaudal plates one-rowed ; tail ending in a spine ; head shielded. 



America. Cenchrina. 



8. Cenchris. 



Head shielded ; tail ending in a spine ; subcaudal plate entire, 

 one-rowed. 



c 2 • 



