362 REPTILES. OPHIDIA. 



A. palpebrosus, Cuv. {Boa palpebrosa, Shaw.) Body pale gray, 

 with black transverse bands on the back, and two rows of black 

 points below. 15 inches long. Shaw, iii. 362. 



A. Brownii, Leach. Body blackish, with the lower lip white ; a 

 transverse groove before the nostrils ; tail short and flattened la- 

 terally. 8 inches long. New Holland Leach, Zool. Mis. pi. 3. 



Gen. 23. L ANGARA, Brug. 



Body covered anteriorly with small scales above ; plates be- 

 hind the anus surrounding the tail ; tail towards the end 

 furnished with small scales ; muzzle long and pointed ; poison- 

 ous fangs in the upper jaw. 



L. nasuta, Shaw. Head with seven large scales ; muzzle with a 

 tendinous prolongation, covered with small scales ; body covered 

 with reddish and violet and yellow points ; scales rhomboidal. 

 2 feet 8 inches long. Inhabits Madagascar Shaw, iii. pi. 127 



6. With transverse plates under the belly, divided into two 

 under the tail. VIPERA, Daud. 



Gen. 24. TRIGONOCEPHALUS, Oppel. 



Head widened behind, in some covered with scales similar to 

 those of the back, in others granulated ; depressions behind 

 the nostrils ; poison fangs in the upper jaw ; tail often ter- 

 minated by a small horny spur. 



T. lanceolatus, Cuv. {Coluber Megcera, Shaw.) Body brown, with 

 yellow variegations ; head flat, cordate j a large orifice on each 

 side between the eyes and nostrils. 5 to 6 feet long. Inhabits 

 Martinico. Shaw, iii. 406. 



T. Alecto. (Coluber Alecto, Shaw.) Body whitish, with rectangu- 

 lar rhomboidal brown spots along the back, and cordated ferru- 

 g'nous head ; a black lateral stripe. 5^ feet long. Inhabits 

 eylon. Shaw, iii. 405. 



T. atrox. (Coluber atrox, Lin.) Body gray brown, with trans- 

 verse linear whitish stripes ; abdomen dusky, with white trans- 

 verse variegations. 18 inches long. Ceylon. Sharv, iii. 429. 



T. viridis, Cuv. (Trimeresurus, Lacep.) Body green, with three 

 large plates and two smaller under the tail ; top of the head co- 

 vered with scales similar to those of the back. Inhabits New 

 Holland. An. Mus. iv. pi. 56, fig. 2. 



Gen. %5. PLATLTRUS, Latr. 



Tail compressed ; with two rows of plates, and terminated with 

 two large ones ; head covered with larger plates ; poison 

 fangs in the upper jaw. 



P. laticaudatus, Cuv. (Hydrus Colubrinus, Schn.) Body cinereous, 

 banded transversely with white and blackish stripes; scales rhom- 

 boidal. 2 feet long. Inhabits Indian Seas. Shaw, iii. pi. 123. 



