14 COLOBRIDJS. 



F. Pale olive-brown above, with five dark longitudinal streaks ; a 



dark streak through the eye ; labials black-edged ; throat dark 

 olive, spotted with white, (H. quinquelineatus, Steind.) 



a. $ (V. 198 ; C. 96). Rosario de Cucuta, Mr. C. Webber [0.]. 



Colombia. 



G. Olive above, whitish or pale olive beneath ; a dark brown verte- 



bral stripe, and a less distinct dark stripe along each side. 

 (D. dorsalis, Bocourt.) 



a,b. c? (V. 178; C. 120) Duenas, Guatemala. O. Salvin, Esq. [C.]. 

 & $ (V. 193 ; C. 112). 



3. Drymobius affinis. 



Herpetodryas affinis, Steindachn. Sitzb. Ak. Wien, Ixii. 1870, p. 348, 

 pi. vii. figs. 4 & 5. 



Rostral just visible from above ; internasals a little shorter than 

 the praef rentals ; frontal very broad anteriorly, very narrow poste- 

 riorly, the lateral border very concave ; loreal twice as long as deep ; 

 one prseocular, in contact with the frontal ; two postoculars ; tem- 

 porals 1 -+- 2 ; nine upper labials, fifth and sixth entering the eye. 

 Scales in 15 rows, all except the outer row keeled. Olive above, 

 yellowish brown below ; upper lip yellow, black-edged below ; a 

 black stripe on each side of the head ; upper surface of head dotted 

 with black ; anterior part of body with five narrow black stripes ; 

 golar region blackish, spotted with yellow. 



Brazil. 



4. Drymobius rhombifer. 



Coryphodon rhombifer, Oiinth. Proc. Zool. Soc. 1860, p. 236. 

 Herpetodryas dendrophis, part., Jan, Icon. G6n. 31, pi. iii. fig. 1 



(1869). 



Spilotes rhombifer, Peters, Mon. Berl. Ac. 1879, p. 777. 

 Drymobius rhombifer, Bocourt, Miss. Sc. Mex., Rept. pi. xliii. fig. 1 



(1888). 

 Zamenis rhombifer, Gtinth. Biol. C.-Am., Rept. p. 120, pi. xlv. (1894). 



Maxillary teeth 30 to 32, posterior moderately enlarged. Rostral 

 broader than deep, just visible from above; internasals much 

 shorter than the praefrontals ; frontal once and a half to once and 

 two thirds as long as broad, as long as its distance" from the rostral 

 or the end of the snout, a little shorter than the parietals ; loreal as 

 long as deep or a little longer ; one prseocular, not touching the 

 frontal ; two postoculars ; temporals 2 -f 2 ; nine upper labials, 

 fourth, fifth, and sixth entering the eye ; five lower labials in con- 

 tact with the anterior chin-shields, which are shorter than the 

 posterior. Scales strongly keeled, in 17 rows. Ventrals 148-163 ; 

 anal divided ; subcaudals 84-96. Palo brown above, with a more 

 or less distinct series of large rhomboidal dark spots edged with 

 blackish ; lower parts yellowish, with a lateral series of black spots. 



Total length 950 millim. ; tail 300. 



Colombia, Ecuador, Northern Peru. 



a. Hgr. (V. 163 ; C. 86). Chiriqui. F. D. Godman, Esq. [P.]. 



