192 COLUBRID. 
yellowish green beneath and on the upper lip; a yellowish-white 
line along each side of the belly and tail. 
Total length 1550 millim.; tail 510. 
Tropical America. 
a. do (V. 205; C. 165). Yucatan. 
b. 2 (V. 217; C.?P). British Honduras. 
e. do (V. 214; 0.151). Panama. Capt. J. C. Dow [P.]. 
d. 2 (V. 205; 0.157). Para. 
e. 9 (V. 206; C.156). Caballo Cocha, N.E. Mr. W.. Davis [C.]; 
(V. 200; 0. 189) pets Messrs, Veitch| P. }. 
J 3 skeleton. Para 
4. Oxybelis acuminatus. 
Coluber acuminatus, Wied, Abbild. Nat. Bras. (1822), and Beitr. i. 
p. 322 (1825). 
Dryinus seneus, Wagl. in Spix, Serp. Bras. B 12, pl. iii. (1824). 
auratus, Bell, Zool. Journ, ii. 1825, p. 325, pl. xii. 
me aN aurata, Schleg. Phys. Serp. ii. p. 255, pl. x. figs. 16-18 
1837). 
Oxybelis wneus, Dum. § Bibr. vii. p. 819 (1854); Jan, Icon. Gén. 
, pl. iv. fig. 2 (1869), 
Dryophis vittatus, Girard, U.S. Nav. Astron. Exped., Rept. p. 211, 
pl. xxxvi. (1855). 
Dryiophis acuminata, Giinth. Cat. pp. 156 & 252 (1858) ; Cope, Proc. 
Ac. Philad, 1860, p. 555; Boettg. Ber. Senck. Ges, 1889, p. 314; 
Giinth. Biol. C.-Am., Rept. p. 177 (1895). 
Oxybelis acuminatus, Steind. Novara, Rept. p. 72 (1867). 
Dryiophis zneus, Garm. Proc. Am. Philos. Soc. xxiv. 1887, p. 284. 
Snout thrice to thrice and a half as long as the eye, prominent, 
Rostral nearly as deep as broad or broader than deep, scarcely 
visible from above; internasals shorter than the prefrontals; 
frontal once and two thirds to thrice as long as broad, not broader 
than the supraocular, as long as or a little longer than the pre- 
frontals, as long as or shorter than the parietals; no loreal, pre- 
frontal in contact with two or three labials; one preocular, in 
contact with or separated from the frontal; two (rarely three) 
postoculars; temporals very large, 14+2; eight or nine (rarely 
ten) upper labials, fourth and fifth, fourth, fifth, and sixth, or fifth, 
sixth, and seventh entering the eye; four (rarely five) lower labials 
in contact with the anterior chin-shields, which are much shorter 
than the posterior. Scales smooth or faintly keeled, in 17 rows *. 
Ventrals 174-203; anal divided; subcaudals 150-188. Bronzy, 
greyish, or reddish above, uniform or freckled with brown, usually 
with scattered black dots, or with black edges to some of the scales ; 
a black line on each side of the head, passing through the eye ; 
upper lip and lower surface of head yellowish white; yellowish, 
pale brownish, or reddish beneath, speckled or streaked with brown, 
* Garman mentions a specimen from Trinidad with 15 rows. 
