188 



COLUBRID^. 



Snout short, not much longer than the eye. Rostral nearly as 

 deep as broad, visible from above ; internasals much shorter than 

 the prsefrontals ; frontal once and one fourth to once and a half 

 as long as broad, as long as or a little longer than its distance from 

 the end of the snout, as long as the parietals ; loreal as long as 

 deep or longer than deep; one prseocular (rarely divided), not 

 reaching the frontal ; three postoculars; temporals 1+2 ; seven or 

 eight upper labials, third and fourth or fourth and fifth entering 

 the eye ; three or four lower labials in. contact with the anterior 

 chin-shields, which are smaller than the posterior. Scales in 19 

 or 21 rows. Ventrals 164-201 ; anal divided; subcaudals 91-131. 

 Coloration very variable. 



Total length 1500 miUim. ; tail 380. 



Tropical and South Africa. 



A. Brown above, upper lip and lower parts yellowish or greyish ; 

 young with darker and lighter spots, and the beUy speckled 

 with brown. (B. typus. Smith.) 



Port Natal. 



a. $ (Sc. 19; V. 191 



C. 122). 

 b-d. Hgr. d (Sc. 19 



V. 185; 0. 117), ? 



(Sc.l9;V.193;C.120), 



& yg. (Sc. 19 ; V. 171 



C. 115). 



e. Yg. (Sc. 21 ; V. 187 

 0. 117). 



f. Yg. (Sc. 21 ; V. 169 

 0. 116). 



g. Yg. (Sc. 19; V. 176 

 C. 118). 



h. Yg. (Sc. 19; V. 180 



0. 123). 

 i. S (head and tail only) 



h. Hgr. (Sc. 19 ; V. 183 



0. 109). 

 1. Hgr. (Sc. 21 ; V. 188 



0. 98). 



Natal. 



Natal. 

 S. Africa, 

 Zambesi. 



Rev. H. Calloway 



Mr. T.'Ayrea [C.]. 



J. H. Gumey, Esq. 



[P.]. 

 Chatham Mus. 



Sir J. Kirk [0.]. 



Zomha, Brit. C. Africa. Sir H. H. Johnston 



[P.]. 

 Between the E. Coast Capt. Speke [P.]. 



and Unyamwezi. 

 Mpwapwa, interior of 



E. Africa. 

 Anseba Valley, Abys- W. T. Blanford, Esq. 



sinia. [P.]. 



B. Olive-brown above, yellowish beneath, scales and shields edged 



with blackish. (B. jardinii. Smith.) 



a. c? (Sc. 19; V. 179; Africa. Mr. Argent [C. J 



C. 112). 



C. Green above, uniform or scales narrowly edged with black. 



{B. viridis, Smith.) 



a. 2 (Sc. 19 ; V. 164 ; Barberton, Transvaal. S. African Mus. [P.]. 

 0. 111). 



b. $ (Sc. 19 ; V. 182 ; Mpwapwa, E. Africa. 

 C. ?). 



c. (J (Sc. 19 ; V. 185 ; Ugogo, E. Africa. Mr. Baxter [0.]. 

 C. 125). 



