154, OXXEHOPTJS. 113 



nape dark brown or blackish, -witb or without a yellowish band 

 across the temples and occiput ; lower parts uniform yellowish. 



Total length 1180 millim. ; tail 240. ' 



Tropical South America ; Panama. 



a. Yg. (V. 190; 0. 64). Cayenne. H.O.Bothery,Es(l.[P.]. 



b,c,d. <J (Y. 1S5; C. 81) Caracas. 



& yg. (V. 190, 184; G. 



71, 78). 



e. tJCV. 189; C. ?). Trinidad. 



/. 2 (V. 190; 0. ?). Trinidad. C. Taylor, Esq. [P.]. 



ff. Hgr. (V. 198; C. 77). Bogota. C. Laverde, Esq. [P.]. 



h. c? (V. 188; 0. 96). Panama. Mr. Eraser [C.]. 



i,k. cJ (V. 197; C. 79) & S. America. 



$ (V. 205; C. 75). 



17. Oxyrhopus guerinl. 



Rhinosimus guerini, Dum. ^ Bibr. vii. p. 991, pi. Ixxii, (1854) ; 



Gunth. Cat. p. 10 (1858). 

 Scytale neuwiedii, part., Dum, 8f Bibr. t. c. p. 1001. 



coronatum, part., Gunth. I, e. p. 187. 



PliimopMs gaerini, Cope, JProc. Ac. Philad. 1860, p. 79, and 1862,. 



p. 347. 

 Scytale guerini, Jan, Elenco, p. 91 (1863), and Icon. GSn, 34, pi. yi. 



fig. 2 (1870). 

 coronatum, Wucherer, Proa. Zool. Soc. 1863, p. 56 ; Peracoa, 



Boll. Mus. Torin. no. 195, 1895, p. 21. 

 Rhinosimus, sp., F. Mull. Verh. Nat. Ges. Basel, vi. 1878, p. 683. 



Eye rather small; snout obtusely pointed, strongly projecting. 

 Rostral large, nearly as deep as broad, its upper portion forming a 

 right or acute angle and measuring at least two thirds its distance 

 from the frontal ; internasals much shorter than the praefrontals ; 

 frontal a little longer than broad, usually shorter than its distance 

 from the end of the snout, shorter than the parietals ; loreal much 

 longer than deep ; one prseooular (rarely divided), not reaching the 

 upper surface of the head ; two postoculars ; temporals 2 + 3 ; eight 

 (exceptionally seven) upper labials, fourth and fifth (or third and 

 fourth) entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are shorter than the posterior. Scales 

 in 19 rows. Ventrals 185-211 ; anal entire ; subcaudals 70-99, 

 single or only a few of the posterior in pairs. Adult dark browm 

 or black above, with or without some large irregular whitish spots, 

 yellowish white beneath ; young pale brown above, with the anterior 

 half of the head and the nape blackish, the posterior half of the 

 head yellowish white. 



Total length 1120 millim. ; tail 250. 



Brazil, Paraguay. 



o. (J (V. 200 ; 0. 89). Corumba,M.attoGrosso. Spencer Moore, Esq. 



J-c 3 (V. 189 ; C. 93) BaHa. Lord Walsmgham 



&$ (V. 206; 0.83). [P.]. 



VOL. m. ^ 



