450 



o. ? (V. 179 ; C. 96). 



AMBLTCEPHALID^ . 



Pozuzu, Peru. 



Mr. W.Davis [C] ; 

 Messrs. Veitch 



p. Hgr. (V. 179 ; C. 91). 

 y. Hgr. (V. 178; C. 92). 



[PJ: 

 Pampa del Sacra- Mr. W. Davis [C.]; 



mento, Peru. Messrs. Veitch 



[P.]. 

 Madre de Dios, 

 Bolivia. 

 r~s. (S (V. 189 ; 0. 108) & Canelos, Ecuador. Mr. Buckley [0.]. 



hgr. (V. 171 ; C. 90). 

 t. c? (V. 176 ; 0. 97). Guayaquil. Mr. Eraser [C.]. 



u. Skull of 0. 



2. Leptognathus pavonina. 



Dipsas pavonina, Schley. Phys. Serp. ii. p. 280 (1837). 

 Leptognathus pavoninus, Bum. Sf Bibr. vii. p. 474 (1864) ; Gunth, 

 Cat. p. 179 (1868) ; Cope, Proc. Ac. Pkilad. 1868, p. 107. 



catesbyi, part., Gunth. I. v. p. 180. 



copii, Gunth. Am. ^ Mag. N. K. (4) ix. 1872, p. 30. 



Body slender, strongly compressed. Eye large. Eostral broader 

 than deep, not or but scarcely visible from above ; internasals one 

 half to two thirds as long as the prsefrontals ; frontal as long as 

 broad, nearly as long as its distance from the eod of the snout, 

 much shorter than the parietals ; nasal entire or .semidivided ; 

 loreal deeper than long, bordering the eye, sometimes fused with 

 the nasal or with a praeocular ; a prgeocular above the loreal ; two 

 or three postoculars ; temporals 1+2 or 2 or 3; ten or eleven 

 upper labials, fifth and sixth, fourth to sixth, or fifth to seventh 

 entering the eye ; first lower labial in contact with its fellow behind 

 the symphysial ; three pairs of chin-shields, anterior longer than 

 broad. Scales in 13 rows, vertebrals more or less enlarged, largest 

 not twice as broad as long. Ventrals 186-220 ; anal entire ; sub- 

 caudals 112-145. Yellowish brown or cream-colour above, with 

 very large elongate, dark brown, white-edged spots, disposed, singly 

 or in pairs, at regular distances, the interspaces much shorter than 

 the spots ; these descend to the sides of the belly, the anterior even 

 coalescing beneath and forming complete rings ; head dark brown, 

 spotted with white, or siiout and temples white. 



Total length 700 millim. ; tail 230. 



Gaianas, BrazU, Ecuador, Bolivia. 



Bolivia. 



