124 COLUBRID. 
twice as broad as deep, scarcely visible from above; internasals as 
long as broad or a little longer, as long as or shorter than the pre- 
frontals ; frontal once and a half to once and three fourths as long 
as broad, longer than its distance from the end of the snout, as long 
as or a little shorter than the parietals; loreal tetra- or pentagonal, 
longer than deep ; one (rarely two) pra- and two postoculars ; tem- 
porals 1+2 or 1+1+2; eight upper labials, third, fourth, and 
fifth entering the eye; five lower labials in contact with the anterior 
chin-shields, which are shorter than the posterior. Scales in 19 
rows. Ventrals obtusely angulate laterally, 191-210; anal divided ; 
subcaudals 103-144. Length of tail 23 to 33 times in the total 
length. Coloration very variable: some specimens pale brown with 
dark brown spots or with a dark zigzag vertebral band, others 
yellow with black spots or black with yellow spots; a dark band on 
each side of the head, passing through the eye, sometimes continued 
along the body; belly yellow, uniform or with small black spots ; 
hinder half of belly, and tail, frequently uniform black. 
Total length 1300 millim. ; tail 370. 
_ West Indies (Antigua, Montserrat, Guadeloupe, Marie-Galante, 
Dominica). 
a-b. Yg. (V.196, 195; C. Antigua, 
105, 103). 
ch. S (V. 200, 205; C. Montserrat, J.S. Hollings, Esq. [P.}. 
125, 182) & 2 (V. 206, 
203, 19!), 203; C. 121, P, 
113, 118). 
a 3 (V. 203; C. 139). Guadeloupe. 
k-n, 0-q. 3 (V. 195, 200; Dominica. G, A. Ramage, Esq. [C.]. 
C. 114, 120), 2 (V. 194, 
200, 202; ©, 116, P,P), 
hgr. (V. 200; C.115),& 
yg. (V.191; C. 120). 
7. Dromicus rufiventris. 
Dromicus rufiventris, Dum. § Bibr. vii. p. 668 (1854); Giinth. Cat. 
p- 150 (1858) ; Jan, Icon. Gén. 25, pl. iii. fig. 1-(1867). 
Alsophis rijersmeei, Cope, Proc, Am. Philos. Soc, xi. 1869, p. 154. 
rutiventris, Garm, Proc. Am. Philos, Soc. xxiy. 1887, p. 282. 
—— cinereus, Gari. l.c. 
Eye moderate; snout projecting. Rostral much broader than 
deep, not or but scarcely visible from above; internasals as long as 
broad or a little longer, as long as or shorter than the prefrontals ; 
frontal about twice as long as broad; loreal longer than deep; one 
(sometimes two) prae- and two postoculars; temporals 1+2; eight 
upper labials, third, fourth, and fifth entering the eye; five lower 
labials in contact with the anterior chin-shields, which are shorter 
than the posterior. Scales in 21 or 23 rows. Ventrals obtusely 
angulate laterally, 200-220; anal divided; subcaudals 91-122. 
Length of tail 3; to 43 times in the total length. Yellowish brown 
above, with dark brown spots or interrupted longitudinal streaks ; 
a 
