326 COLTTBRID^. 



1. Bothrolycus ater. 



Bothrolyous ater, Gunth. I. c. pi. Ivii. tig. B. 



Snout projecting, obliquely truncate ; loreal region vertical. 

 Rostral a little broader than deep, not visible from above ; inter- 

 nasals much shorter than the prsefrontals ; frontal once and a half 

 as long as broad, as long as its distance from the end of the snout, 

 as long as the parietals ; loreal elongate, entering the ej'e ; two 

 postoculars ; temporals 1 + 2; seven upper labials, third, fourth, 

 and fifth entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are as long as or a little longer than 

 the posterior. Scales in 19 rows. Ventrals 147-148 ; anal entire; 

 subcaudals 18-22. Blackish brown above, head paler ; pale brown 

 interiorly, with whitish dots or short streaks ; lips and chin with a 

 few whitish, black-edged dots. 



Total length 460 millim. ; tail 40. 



Cameroons. 



o. 2 (V. 147 ; 0. 22). Cameroons. (Tvpe.) 



6. ? (V. 148 ; 0. 18). Cameroons. D.G. Rutherford, Esq. [C.]. 



43. CYCLOCORUS. 



Cyclooorus, Ihi^n. S( Bihr. Mem. Ac. Sc. xxiii. 18.53, p. 460, and 

 Erp. Gen. vii. p. 885 (1854) : Gimth. Cat. Col. 8n. p. 208 (1858) ; 

 Jan, Elenco sist. Ofid. p. 95 (1863). 



Maxillary and dentary bones angularly bent inwards anteriorly ; 

 three or four anterior teeth, in both jaws, increasing in size, the 

 last large and fang-like, followed after an interspace by 12 or 13 



Kg. 21. 



Maxillary and roandible of Cyclocorus lineahis. 



small maxillary teeth. Head slightly distinct from neck ; eye 

 rather small, with round pupil. Body moderately elongate, cylin- 

 drical ; scales smooth, with apical pits, in 1 7 rows ; ventrals rounded. 

 Tail moderate ; subcaudals single. Hypapophyscs developed through- 

 out the vertebral column. 

 Philippine Islands. 



