154. OXTRHOPUS. 107 



greenish in front, red behind, each scale with a black dot, with 

 black annuli -which are narrower on the belly than on the back > 

 head uniform orange. 



Total length 870 millim. ; tail 165. 



Brazil. 



a. $ (V. 194 ; C. 67). Bahia. Dr. 0. Wucherer [C.]. 



6. $ (V. 203 ; 0. 67j. S. America. Liverpool Mus. [E.]. 



8. Oxyrhopus labialis. 



Oxyrhopus labialis, Jan, Elenco, p. 93 (1863), and Icon. Q4n. 35, 



pi. ii. fig. 2 (1870). 

 dorbignyi {fion D. Sf -B.), Jan, Icon. 04n, 35, pi. iv. fig. 3. 



Eye moderate, its diameter about half the length of the snout, 

 which is rounded, scarcely projecting. Rostral broader than deep, 

 just visible from above ; internasals much shorter than the prse- 

 frontals ; frontal once and one third to once and a half as long as 

 broad, as long as its distance from the end of the snout, a little 

 shorter than the parietals ; loreal much longer than deep ; one 

 praeocular, extending to the upper surface of the head but not 

 reaching the frontal; two postoculars; temporals 2+3; eight 

 upper labials, fourth and fifth entering the eye ; four (or three) 

 lower labials in contact with the anterior chin-shields, which are as 

 long as or a little longer than the posterior. Scales in 19 rows, 

 Yentrals 172-201 ; anal entire ; subcaudals 57-78. Pale brown 

 or red above, with or without rhomboidal transverse spots ; head 

 dark brown or blackish above ; yellow beneath. 



Total length 760 millim. ; tail 130. 



Argentina. 



A. No dorsal spots ; aU the scales with a blackish terminal dot. 

 o. J ("V. 172 ; 0. 68). Argentina. E. W. White, Es^. [C], 



B. A series of large rhomboidal transverse spots on the body and 

 tail, the interspaces between them dotted with black. 



201 ; 0. 61). Oosquin, Cordova. E. W. White, Esq. [0.]. 

 ■g.' (V. 194 ; C. 64). Salta. Herbert Druce, Esq. [P.l- 



9. Oxyrhopus clathratus. 



Oxyrhopus clathratus,- iJwm. 8f Bibr. vii. p. 1026 (1854) ; Chdchen. in 

 Casteln. Anim. Nouv. Amer. Sud, Rept. p. 63, pi. zii. a (1855) ;. 

 Jan, Icon. Gen. 35, pi. iii. figs. 1 & 2 (1870). 



Eye moderate, its diameter about half the length of the snout, 

 which is rounded and scarcely prominent. Rostral broader than 

 deep, just visible from above : internasals much shorter than the 

 prefrontals ; frontal a little longer than broad, as long as its 

 distance from the end of the snout, a little shorter than the 

 parietals ; loreal usually fused with the prsef rental ; one prseocular. 



a. 2 (V. 2 



b. Yg. (V. 



