71. LEPTOPHIS. ail. 
e. 9 .(V. 180; C.P). Santo Domingo de Dr. A.C. Buller[C.]. 
Guzman. 
J. Head and neck. La Laguna, Sierra de Dr. A. C. Buller [C.]. 
Alica. 
g-t. & (V. 171, 167; C. Amula, Guerrero. Mr. H. H. Smith [C.]; 
141, 144) & 2 (V.165; F. D, Godman, Esq. 
C. 126). WP ilk 
k-l. 3 (V. 178; C.?) & Presidio, near Mazat- Mr. A. Forrer [C.]. 
Ov(V..178:; (COIAg). lan. 
m-n. S (V. 185; C. 160) Tres Marias Ids. Mr. A. Forrer [C.]. 
& her. (V. 186; C. 166). 
8. Leptophis bilineatus. 
aeeappis ania Giinth. Ann. § Mag. N. H. (4) ix. 1872, p. 24, 
Oe Vals anfeey 13% 
Penionkie bilindutns, Cope, Proc. Amer. Philos. Soc, xxiii. p. 279; 
(riinth, Biol. C-Am., Rept. p. 130 (1894). 
Rostral broader than deep, just visible from above; internasals 
as long as the prefrontals; 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; nasal moderately elongate, divided ; loreal present, 
twice as long as deep; one preocular, not quite reaching the frontal ; 
two postoculars; temporals 1+2; eight or nine upper labials, 
fourth and fifth (or fifth and sixth) entering the eye; five lower 
labials in contact with the anterior chin-shields, which are shorter 
than the posterior. Scales in 15 rows, those of the series on each 
side of the vertebral with a strong keel. Ventrals feebly angulate 
laterally, 144; anal divided. Bright green above, ight greenish 
beneath ; two black lines following the dorsal keels; a very indis- 
tinct dark streak on each side of the head, passing through the 
eye. 
Total length 910 millim. 
Costa Rica, Nicaragua, Tehuantepec. 
Gs. (Vv. 144:.C.F), Costa Rica. O. Salvin, Esq. [P.]. 
(Type-) 
9. Leptophis occidentalis. (Prax ITI. fig. 2.) 
Dendrophis liocercus, part., Schleg. Phys. Serp. ii. p. 224 (1837) ; 
Guichen. in Gay, Hist. de Chile, Zool. ii. p. 88 (1854). 
liocereus, Berthold, Abh. Ges, Gotting. iii. 1847, p. 11. 
Leptophis liocercus, part., Dum. § Libr. vii. p. 533 (1854). 
Ahvetulla liocercus, part., Giinth. Cat. p. 153 (1858). 
occidentalis, Grinth. Proc. Zool. Soc. 1859, p. 412; Peters, Mon. 
Berl. Ac, 1873, p. 607. 
Thrasops occidentalis, Cope, Proc. Ac. Philad. 1860, p. 557. 
—— prestans, Cope, Proc. Ac. Philad. 1868, p. 509. 
Leptophis preestans, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 133; 
Giinth, biol. C.-Am., Rept. p. 130 (1894). 
Thrasops (Ahetulla) sargii, Pischer, Arch. f. Nat. 1881, p. 229, 
pl. xi. figs. 7-9, 
Leptophis sargii, Cope, Proc. Amer. Philos. Soc. xxiii. 1886, p. 279. 
frees Cope, Proc. Amer. Philos, Soc, xxiil. 1886, 
p- 279. 
