CLASS REPTILIA. 



Berus Vulgaris. Col, Berus, Lin. Var. Col. Aspis, Linn. 



Sturm Fauna, t. Berus Ammodytes. Col. Ammodytes, 



Jacq. Coll. iv. t. 24, 25. Vip. lUyrica, Aid. Sturm 

 Fauna, t. 



C. Head covered with scales, with three larger scales on the 

 forehead ; sub-caudal plates double ; nostrils moderate. 



Pelias, Merrem. 



Pelias Chersea. Col. Berus, Laur. and Baud. Col. Cher- 

 sia, Linn. Sturm. Fauna, Pelias Berus, Merrem. Vipera 

 Berus, Fitz. Var. black. Col. Prester, Linn. Sturm 

 Fauna. 



D. Head covered with small scales ; sub-caudal plates 

 simple. Echis, Merrem. Scytale, Daud. Pseudoboa, 

 Schn. 



Echis Carinata, Merrem. Pseudoboa Carinata, Schn. 

 Scytale Bizonata, Daud. t. 70. Boa Horatta, Shaw. Rus- 



sel, t. 2. India, Echis Krait, Merrem. Boa Krait, 



Williams. Pseudoboa, Schn. Scytale, Daud. India. 



Echis Arenicola, Boie. GeofF. Kept. Egypt, t. 7' f' !• Sa- 

 vigny, t. 4. f. 1 — 4. North Africa. 



E. Head covered with scales in front ; tail ending in a 

 hooTc ; sub-caudal plates simple and double. Acanthopis, 

 Daud. Ophrias, Merrem. 



Acanthopis Cerastinus, Daud. v. t. 77- Merrem. Beytr. ij. 

 t. 9. Boa Palpebrosa, Shaw, Ophria Acanthropis, Mer- 

 rem. Boa Aculeata, E. W. Gray MSS. 1796. Mus. Brit. 



New Holland. Acanthopis Brownii, Leach Zool. Misc. 



j. t, 3. Boa Antartica, Shaw. New Holland. 



Gen. 3. Naia. 

 Head moderate, without any pit, covered with large regu- 

 lar shields, 

 82 



