326 COLITBRIDiE. 



1. Bothrolycus ater. 



Bothrolycus ater, Gunth. I. c. pi. Ivii. fig. B. 



Snout projecting, obliquely truncate ; loreal region vertical. 

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

 nasals much shorter than the pra?lrontals ; frontal once and a half 

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

 as long as the parietals ; loreiil elongate, entering the eye ; 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. 



a. 2 (V. 147 ; 0, 22). Cameroons. (Tvpe.) 



(j. 5 (V. 148; C, 18). Cameroons. D.G. Rutherford, Esq. [C.]. 



43. CYCLOCORUS. 



Cvclocorus, Dum. iS Bi/»: Mem. Ac. Sc. xxiii. 1853, p. 4G0, a?id 

 'Ely. Gen. vii. p. 385 (1854) : Gunth. Cat. Col. Sn. p. 208 (1858) ; 

 Jem, Elenco sist. OJid. 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 



Fig. 21. 



Maxillary and mandible of Cyclocorus lineatus. 



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. 



