14 COLUBRIDift. 



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. (IT. quinquelineatus, Steind.) 



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



Colombia. 



Gr. 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. cJ (V. 178; 0. 120) Duenas, Guatemala. O. Salvin, Esq. [0.]. 

 & ? (V. 193 ; 0. 112). 



3. Drymobius affinis. 



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

 pi. vii. figs. 4 & 5. 



Eostral just visible from above ; internasals a little shorter than 

 the praefrontals ; frontal very broad anteriorly, very narrow poste- 

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

 one praeocular, 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 ; 

 giilar region blackish, spotted with yellow. 



Brazil. 



4. Drymobius rhombifer. 



Ooryphodon rhombifer, GUnth. Proc. Zool. 8oc. 1860, p. 236. 

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



(1869). 

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

 Drymobius rhombifer, Bocourt, Miss. 8c. Mex., Rept. pi. xliii. fig. 1 



(1888). 

 Zamenis rhombifer, Oiinth. 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 prsefrontals ; 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 + 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 148-168 ; 

 anal divided ; subcaudals 84-96. Pale 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 mUhm. ; tail 300. 



Colombia, Ecuador, Northern Peru. 

 a. Hgr. (V. 153 ; C. 85). Chiriqui. F. D. Godman, Esq. [P.]. 



