102 COLUBRID2B. 



207-220; anal divided; subcaudals 163-1 TO. Olive-green above, 

 some of the scales edged with black ; pale green beneath. 



Total length 900 millim. ; tail 320. 



S. Thome Island, W. Africa. 



a. $ (V. 207 ; C. 169). S. Thome". Prof. B. du Bocage [P.]. 



(One of the types.) 



b. rf (V. 207; C. ?). S. Thome". Prof. B. du Bocage [P.]. 



c. cf (V. 219; C. 167). [Demerara.] Col. Sabine [P.]. (One of 



the types of A. nitida.) 



5. Philothanmus girardi. 

 Philothamnus girardi, Bocage, Jorn. Sc. Lisb. (2) iii. 1893, p. 47. 



Rostral broader than deep, the portion visible from above mea- 

 suring about one fourth its distance from the frontal ; internasals 

 shorter than the prsefrontals ; frontal nearly twice as long as broad, 

 with concave lateral borders ; loreal much elongate, sometimes 

 divided into two ; one prae- and two postoculars ; temporals 1 + 1 , 

 rarely 1 + 2; nine upper labials, fourth, fifth, and sixth entering 

 the eye; five lower labials in contact with the anterior chin-shields, 

 which are shorter than the posterior. Scales in 13 rows. Ventrals 

 1 89-194 ; anal divided ; subcaudals 145-153. Olive-green above, 

 with black edges to the scales, forming cross bars on the anterior 

 part of the body ; yellowish white beneath, with a black line along 

 the ventral keel. 



Total length 780 millim. : tail 280. 



Anno-Bom Island, Gulf of Guinea. 



. J (V. 186 ; C. 145). Anno-Bom Id. Prof. B. du Bocage [P.]. 



(One of the types.) 



68. GASTROPYXIS. 



Dendrophis, part., Schleg. Phys. Serp. ii. p. 220 (1837). 



Leptopnis, part., Dum. $ tiibr. Erp. Gen. vii. p. 528 (1854) ; Jan, 



Elenco sist. Ofid. p. 84 (1863). 

 Ahaetulla, part., Giinth. Cat. Col. Sn. p. 151 (1858). 

 Gastropyxis, Cope, Proc. Ac. Philad. 18(!0, p. 556. 

 Hapsiaophrys, part., Fischer, Abh. natuno. Ver. Hamb. iii. 1856, 



p. 110 ; Giinth. 1. c. p. 144 ; Jan, I. c. p. 86. 



Maxillary teeth 20 to 22, posterior longest ; mandibular teeth 

 subequal. Head rather elongate, distinct from neck ; eye large, 

 with round pupil. Body cylindrical; scales keeled, without or 

 with very indistinct apical pits, in 15 rows. Ventrals with a 

 suture-like lateral keel, and a notch on each side' corresponding to 

 the keel. Tail very long ; subcaudals in two rows, strongly keeled 

 and notched like the veutrals. 



West Africa. 



