102 COLUBRID. 
207-220 ; anal divided; subcaudals 163-175. Olive-green above, 
some of the scales edged with black ; pale green beneath. 
Total length 900 millim.; tail 320. 
S. Thomé Island, W. Africa. 
a. 9 (V. 207; C. 169). S. Thomé. Prof. B. du Bocage [P.]. 
(One of the types.) 
Bo (V. 207; C-F). S. Thomé. Prof. B. du Bocage [ P.]. 
ce. d (VY. 219; C. 167). { Demerara. | Col. Sabine [P.]. (One of 
the types of A, nzteda.) 
5. Philothamuus girardi. 
Philothamuus 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 prefrontals; frontal nearly twice as long as broad, 
with concave lateral borders; loreal much elongate, sometimes 
divided into two; one pre- and two postoculars ; temporals 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 thanthe posterior. Scales in 13 rows. Ventrals 
189-194; 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. 
a. 3 (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). 
Leptophis, part., Dum. § Bibr. Erp, Gén. vii. p. 528 (1854) ; Jan, 
Elenco sist. Ofid. p. 84 (1863). 
Aheetulla, part., Giinth. Cat. Col. Sn. p. 151 (1858). 
Gastropyxis, Cope, Proc, Ac. Philad. 1860, p. 556. 
Hapsidophrys, part., Fischer, Abh. naturw. Ver. Hamb., iii. 1856, 
p- 110; Giinth. l.c. p. 144; Jan, l. ¢. 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 ventrals. 
West Africa, 
