124 COLITBRID,!. 



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 pra3- 

 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) prse- 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 2| to 3| times in the total 

 length. Coloration very variable : some specimens pale brown with 

 dark brown spots or with a dark zigzag vertebral band, others 

 yeUow 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 leng'th 1300 milUm. ; tail 370. 



West Indies (Antigua, Montserrat, Guadeloupe, Marie-Galante, 

 Dominica). 



0-6. Yg. (V. 196, 195; C. Antigua. 



105, 103). 

 c-h. c? (V. 200, 205 ; 0. Montserrat. J. S. Hollings, Esq. [P.]. 



125, 132) & 1 (V. 206, 



203, 19!), 203; C. 121, P, 



113, 118). 

 i. (S (V. 203; C. 139). Guadeloupe. 



A-re, o-q. c? (V. 195, 200 ; Dominica. G. A. Ramage, Esq. [C.]. 



0. 114, 120), $ (V. 194, 



200, 202» 0. 115, ?, ?), 



hgr. (V.200; 0.1]5),& 



yg. (V. 191 ; 0. 120). 



7. Dromicus rufiventris. 



Dromicus rufiventris, Dum. Sf Bibr. vii. p. 668 (1854) ; GiintJi. Cat. 



p. 130 (18.58) ; Jan, Icon. Gin. 25, pi. iii. iig. 1 (1867). 

 Alsophis rijersmaei, Cope, Proc. Am. Philos. Soc. xi. 1869, p. 154. 



rufiventris, Garm. Proc. Am. Philos. Hoc. xxiv. 1887, p. 282. 



cinereus, Garm. I. c. 



Eye moderate; snoat projecting. Eostral 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 prsefrontals ; 

 frontal about twice as long as broad ; loreal longer than deep ; one 

 (sometimes two) prse- 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 4| times in the total length. Yellowish brown 

 above, with dark brown spots or interrupted longitudinal streaks ; 



