71. LEPTOPHZS. 113 



praefrontal in contact with labials ; one prseocnlar, in contact with 

 or narrowly separated from the frontal; temporals l + '2; eight or 

 nine upper labials, fourth and fifth or fifth and sixth entering the 

 eye ; five or six lower labials in contact with the anterior chin- 

 shields, which are shorter than the posterior. .Scales in 15 rows, 

 all except the outer row more or less distinctly keeled ; the keel 

 on the middle vertebral series more feeble, or obsolete ; scales on 

 neck and tail smooth. Ventrals distinctly angulate laterally, 149- 

 161; anal divided ; subcaudals 106-163. Green above, head-shields 

 and scales broadly edged with black ; keels black ; ventrals and 

 subcaudals yellowish or pale green, uniform or edged with dark 

 green. 



Total length 1010 millim. ; tail 390. 



Upper Amazons. 



a. 5 (V. 158; C. 115). Upper Amazons. Mr. E. Bartlett [0.]. 



(Type.) 



b-e. c? (V.155; C.142)& Pebas. 



2 (V. 161; 0.163). 



d-e. 2 f V. 158, 149 ; C. Peruvian Amazons. 



15.3, 150). 



f-ff. c? (V. 155; 0. 117) Moyobamba, N.E. Mr. A. H. Eoir[0.]. 



'& 2 {V. 15.3 ; 0. 144). Peru. 



h. 2 (V. 151 ; 0. lOG). Sarayacu, N.E. Peru. Mr. W. Davis [C: 



E.Peru. Mr. W. Davis [C.l ; 



Messrs. Veitch fP.l j. / /civ 



11. Leptophis Bae^ajs. *-*^ ^ ^^ 



Coluber ahastuUa, part., Gmel. S. N. i. p. 1116 (1783) ; Bmnat. 



E-ncycl. Meth., Ophiol. p. 28 (1789) ; Lacep. Serp, p. 223, pi. xi. 



fig. 1 a789). 



boiga, part., Baud. Sept. vii. p. 68, pi. Ixxxiv. (1808). 



liocercus, Wied, Abbild. (1824), mid Beitr. Nat. Bras. i. p. 206 



(1825). 

 richardii, Bory de St. Vine. Ann. Sc. Nat. i. 1824, p. 408, 



pi. xxiv. 

 AhaetLila liocerous, Oray, Griff. A. K. ix. 8yn. p. 93 (1831). 



richai'di, Oray, I. c. 



Leptophis ahfetuUa, part., Bell, Zool. Journ. ii. 1825, p. 328. 

 Dendrophis liocercus, part., Schleg. Phys. Serp. ii. p. 224, pi. ix. 



figs. 1 & 2 (18.37). 

 Leptophis liocercus, part., Bum. §• Bibr. vii. p. 633 (1845). 

 AhajtuUa liocercus, part., OUnth. Cat. p. ].53 (1858). 



liocercus, Qiinth. Proc. Zool. 8oc. 1859, p. 413. 



Thrasops aliaitulla, Cope, Proc. Ac. Philad. 1860, p. 557. 



marginatus, Cope, Proc. Ac. Philad. 1862, p. 349. 



Ahstulla ahfetulla, Peters, Mon. Perl. Ac. 1873, p. 607. 

 Leptophis liocercus, Jan, Icon. G&n. 49, pi. vi. fig. 1 (1879). 



Rostral broader than deep, just visible from above; internasals as 

 long as or shorter than ,the prsefrontals ; frontal once and a half to 

 twice as long as broad, as long as its distance from the rostral or 

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

 nasal elongate, entire or divided ; no loreal ; preefrontal in contact 



vol. II. I 



