136 PROCEEDINGS OF THE ACADEMY OF 



Gastrosteges 165; anal 1 ; urostcges 74. Total length 16 in. ; of tail 3-75 

 in. ; of gape 5 1. 



From Bahia, Brazil. Spec, in Mus. Academy, presented by E. D. Cope. 



Leptognathus vaga Jan., Elenco Systematico (nondescripta). 



This species has not been described, so far as the writer is aware, but it 

 can be assigned to its place in consequence of an examination of the original 

 specimen, which was permitted the writer through the attention of Prof. Jan. 



It belongs to group II, and has but two postocular plates; of its preoculars 

 nothing can be said. Superior labials eight. There are four pairs of genials. 

 General form less compressed than the types, with rather short body and tail. 

 Above wood-brown, with indistinct cross series of spots. Below yellowish, 

 tesellated with brown. Size not large for the genus. 



This species is said to have been brought from Hong Kong, but this is alto- 

 gether improbable; it is probably South American. 



Another species, L. incertus, from Surinam, is named but not described by 

 Jan, and is therefore likely to remain incertus. 



Lkptognathus brevis Dum. Bibr., vii, 476. 



This species is not described in sufficient detail to allow me to refer it to 

 its place in this genus. It appears, however, to be different from any species 

 here enumerated, though it has the coloration of several Mexican species. 



Mexico, Dum. Bibron. 



Leptognathus oreas Cope. See preceding Catalogue. 



Leptognathus in.*:quifasciata Cope. Cochliophogus iniequi. Dum. Bibr., vii. 

 From Brazil, with doubt. D. B. 



Leptognathus nebulata Giinther, Linn. Pelalognathus Dum. Bibr. Coluber 

 varieyatus Hallowell, Pr. A. N. S. ii, 214. See Catalogue. 



Leptognathus anthracops Cope, sp. nov. 



A strongly marked species, having a general resemblance to the L. 

 s a r t o r i i . 



Muzzle short, narrowed, frontal plate longer than wide, with straight sides; 

 occipitals not shortened, broadly rounded behind. Anterior three labials 

 narrow and high, fourth and fifth only touching orbit. Sixth upper labial 

 much higher than long ; seventh much longer than high. Inferior postocular 

 larger than superior. Temporals rather small, subequal, 1 | 2 | 3 ; loreal 

 longer than high. Sixth inferior labial enlarged. Second pair genials longer 

 than wide, third pair wider than long. 



Yellow annuli, 9^- rows scales apart anteriorly, four rows distant posteri- 

 orly ; yellow rings, wider behind. There are twenty-three on the body, 

 twelve on the tail. They are often alternating on the belly, which is other- 

 wise unspotted. No white markings on top of head. 



Gastrosteges 177; anal 1 ; urosteges 76, some dozen or more at the tip of 

 the tail undivided in the individual at hand. 



Total length 19 in. 8 1.; of tail 5 in. 3 1.; of gape 4-75 1. 



From Central America ; one sp. in Mus. Academy from E. D. Cope, pro- 

 cured from the traveller and collector, Robert Bridges. 



Leptognathus brevifacies Cope. Tropidodipsas brevifacies Cope, Proc. A. N. 

 Sci. Philada. Ib66. 

 From Yucatan. 

 Leptognathus turgida Cope, sp. nov. " Cochliophagiis jnseqi/ifascialus D. B.," 

 Cope, Proc. A. N. Sci. Philada. 1862, 347; not of Dum. Bibr. 

 This species has the head very little distinct from the body when viewed 

 from above, and the neck but little compressed. In profile the frontal region 

 is seen to be concave, and the top of the muzzle swollen both longitudinally 

 and transversely. The internasals are but little broader than long; the same 



[March, 



