so VENOMS 



Habitat: West Africa, from the Gold Coast to the Congo; 

 Central Africa. 



(4) A. corpuleiita. — Postocular shield in contact with a large 

 temporal ; second lower labial very large, fused with the chin- 

 shields. Scales on the body in 23 — '11 rows ; 178^198 ventrals ; 

 "I'd — 27 subcandals. 



Colour uniform blackish -brown ; tail sometimes white. 



Total length, 345 millimetres ; tail 33. 



Habitat : West Africa, from Liberia to the Gaboon. 



(5) A. rustrata. — Snout very prominent, cuneiform. Third 

 lower labial very large ; first lower labial in contact with its fellow, 

 behind the symphysial. Scales on the body in lU — 23 rows ; ven- 

 trals 227—248. 



Colour uniform dark brown, or blackish. 

 Total length, 600 millimetres; tail 37. 

 Habitat : East and Central Africa. 



(6) A. bibronii. — Characters as before. Snout prominent, sub- 

 cuneiform. Ventral scales, 221 — 260. 



Colour dark purplish-brown above, dull yellow or pale brown 

 on the belly. 



Total length, 600 millimetres ; tail 25. 



Habitat: Eastern districts of Cape Colony, Natal, Namaqua- 

 land, Angola. 



(7) A. aterrima. — Characters as before. Snout rounded; 

 251 — 300 ventral scales. 



Colour uniform dark brown or black. 

 Total length, 650 millimetres ; tail 30.' 

 Habitat : West and Central Africa. 



(8) A. dahomeyensis. — Characters as before. Symphysial shield 

 in contact with the chin-shields. Scales on the body in 31 rows ; 

 240 ventrals ; 24 subcaudals. 



Colour black above, brown on the belly. 

 Total length, 490 millimetres.; tail 32. 

 Habitat: Dahomey. 



