OmiDIA COLUBRIDAE B. TAENIATDM LATERALE. 



543 



BASCANIUM TAENIATUM, Hallow., subspecies LATERALE, Hallow. 



Leptopliis tmiiata, HALLOW., Proc. Acacl. Nat. Sci. Phila., vi, 1852, 181. Id., Sit- 



greave's Exp. Zuiii & Col. Riv., 1853, 133-140. 

 Masticophis tceniatus, BAIKD & GIRARD, Cat. N. A. Rep., pt. i, Serp., 1853, 103. BD., 



P. R. R. Rep., x, 1859, 20, pi. ii. Id., P. R. R. Rep., 1859, x, COOP. & 



SUCKL., Nat. Hist. Wash. Terr., I860, 302. COPE, Proc. Acad. Nat. Sci. 



Pbila., 1866, 305. 



DrymoMus tceniatus, COPE, Proc. Acad. Nat. Sci. Pbila., 1860, 561. 

 Masticopliis schottii, BAIRD & GIEAED, Cat. N. A. Rept. pt. i, Serp., 1853, ICO. BD., U. 



S. & Mex. Bound. Surv., ii, 1859, 20. (Leptophis latcralis, HALLOW., Proc. 



Acad. Nat. Sci. Pbila., 1853, 237, and Manticophis ornata, BAIRD & GIRARD, 



Cat. N. A. Serp., should probably be added to this list as a synonym.) 

 liascanium twniatum, HALLOW., subspecies laterale, HALLOW., COPE, Check-List N. 



A. Batrach. & Kept., 1875, 40. 

 HAB. Pacilic and Souoran Regions, Utah, and Nevada. 



As numerous as the preceding species, and exhibiting the same pecu- 

 liarities. 



It should be mentioned the last two species were, until very recently, 

 known as Masticophis ; but Professor Cope, after a careful study of their 

 generic characters has regarded this name as a mere synonym of Bas- 

 canium. 



The following genus is a new one erected by Professor Cope to receive 

 a species of serpent found in Arizona. But a single specimen was secured. 



Genus CHILOPOMA, Cope. 



Teeth subequal ; the last one or two on the maxillary bone a little 

 stouter than the others, and separated from them by an interspace ; not 

 grooved. Cephalic scuta normal above ; one nasal shield and one loreal, 

 which enters the orbital border. Rostral obtuse, with prominent lateral and 

 posterior borders. Scales keeled ; anal scutum entire ; subcaudal scutella 

 divided. General form that of Eutcenia. 



