71. LEPTOPHIS. 105 



with round pupil. Body more or less compressed ; scales very 

 strongly overlapping, disposed obliquely, in 13 or 15 rows, the 

 laterals much snorter than the dorsals, which are keeled; apical 

 pits present; ventrals rounded, or with an interrupted lateral keel 



iorly. Tail long; subcaudals in two rows. 

 West Africa. 



1. Thrasops flavigularis. 



Dendrophis flavigularis, Hallow. Proc. Ac. Philad. 1852, p. 205. 

 Thrasops flavigularis, Hallow. Pr.oc. Ac. Philad. 1857, p. 67 ; Prtcr*, 



M',n. Berl. Ac. 1876, p. 119. 

 Hapsidophrys niger, Giinth. Ann. fy Mag. N. H. (4) ix. 1872, 



p. !>.-,. 



Thrasops pustulatus, Buchh. $ Peters, Man. Berl. Ac. 1875, p. 199. 



fluvigularis, var. pustulata, Boettg. Ber. Senck. Ges. 1689, 



p. 279. 



Rostral with straight vertical sides, a little broader than deep, 

 visible from above ; internasals as long as the praefrontals ; frontal 

 a little longer than broad, scarcely broader than the supraocular, as 

 long as its distance from the rostral or the end of the snout and as 

 long as the parietals ; loreal as deep as long ; one praeocular, not in 

 contact with the frontal ; three postoculars ; temporals 1 + 1 ; eight 

 upper labials, fourth and fifth entering the eye ; chin-shields short, 

 the anterior in contact with four lower labials. Scales in 13 or 15 

 rows, dorsals keeled. Ventrals 179-206 ; anal divided ; subcaudals 

 130-140. Black, with or without yellowish spots on the back ; lips 

 and throat yellowish or brownish white. 



Total length 1700 millim. ; tail 500. 



West Africa, from Sierra Leone to the Gaboon. 



a. 3 (V. 179; C. 130). Sierra Leone. 



b. (V. 1H7; C. 132). Monrovia, Liberia. Christiania Museum. 



c. 2 (V. 203 ; C. 140). Gaboon. (Type of //. niyer.) 



d. Skull. Caiueroons. 



71. LEPTOPHIS. 



Leptophis, part., Bell, Zool. Juurn. ii. 1825, p. 328; Dum. $ Biln: 

 l'.r r . Gi-n. vii. p. 52.S ( lS-">4) ; Jan, Elenco gist. Ofid. p. 84 (1863) ; 

 Coj>e, Journ. Ac. Philad. ("2) viii. 1876, p. 1:L'. 



Leptophis, \\'w,l. Syxt. Amph. p. 183 (1 Kin i. 



Ahoetula, part., Gray, Griff. A. K. ix. Syn. p. 93 (1831); Giinth. 

 Cat. Col. .s/i. p. I'll (18o). 



Dendrophis, part., &/*////. /'////. Serp. ii. ]>. 220 (1837). 



Tlirasops, part., ('<>JH; J'roc. Ac. Philnd. l^'"'". p. ">">''>. 



Diplotrupig, Giinth. Ann. $ May. A'. //. (4) ix. 1872, p. 24. 



Maxillary teeth 20 to 32, posterior longest ; anterior mandibular 

 trcth longest. Head elongate, distinct from neck ; eye large, wit Ii 

 round pupil. Body slender, cylindrical or slightly compressed ; 

 scales keeled or smooth, with apical piU, in 13 or 15 rows, disposed 



