OPH1DIA COLUBR1DAE B. CONSTRICTOR VETUSTUM. 



f)41 



PITYOPHIS ELEGANS, Kemricott. 



Arizona elegans, KENNICOTT, U. S. & Mex. Bound. Surv., ii, Rept., 1859, 18. BD., P. R. R. 



Rep., x, 1859, 42, pi. xiii. KENNICOTT apud BD., U. S. & Mex. Bouml. 



Surv., ii, 1859, pi. xiii. 

 Pityophis elegans, COPE, Check-List N. A. Batrach. & Rept., 1875, 39. 



HAB. Sonoran Region. 



Not nearly so abundant as the preceding species. 



Genus BASCANIUM, Baird & Girard. 

 BASCANIDM CONSTRICTOR, Linn., subspecies VETUSTUM, Baird & Girard. 



Coluber flamventris, SAY, Loug's Exped. Rocky Mts., ii, 1823, 185. 

 Bascanionflaviventris, BAIRD & GIRARD, Cat. N. A., Rept., pt. i, Serp., Jan. ,1853, 90. 



BD., U. S. & Mex. Bound. Surv., ii, Rept,, 1859, 20. 



Coryphodon flaviventris, HALLOW., Proc. Acad. Nat. Sci. Phila., Oct., 1850, 241. 

 Bascanionvestutus,EJLiRD.& GIRARD, Cat. M. A., Rept, pt. i, Serp., 1853, 97. GIUARD, 



Herp. U. S.Exp. Exped., 1858, 127. COOPER, P.R.R.Rep.,xii,pt,ii,1800,301. 



