68 



VENOMS 



Colour grey or pale brown above, with a series of large rhom- 

 boidal or V-shaped blackish-brown spots; a large A-shaped dark 

 brown mark on the occiput ; an oblique dark streak behind the 

 eye ; supralabial shields edged wdth black ; belly yellowish. 



Total length, 400 millimetres ; tail 2± 



Habitat : Central and East Africa, Transvaal. 



Fig. 35. — Skull of Coksus rhoinbcaln^. (After G. A. Boulenger, o]>. cit. 



(4) C. Uchtenstelnii. — Snout obtuse; scales in 15 rows; 14'2 — 

 144 ventrals ; snbcaudals 15 — 21, single. 



Colour greyish, w^ith rather indistinct darker chevron-shaped 

 cross-bands. 



Total length, 413 millimetres ; tail 35. 



Habitat : West Africa (Gold Coast), Congo. 



