542 



ZOOLOGY BATRACHIANS AND REPTILES. 



Eascanium constrictor, LINN., subspecies vcstutum, BAIRD & GIRARD. COPE, Check- 

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

 HAB. Pacific Region. 



The only species of the former genus Bascanium rnet with in Utah in 

 1872, although we were informed that B. constrictor had been observed. 

 This serpent is entitled "Blue Chaser" by the settlers, and appears to be 

 dreaded, for what reason we were unable to ascertain. 



Quite common. 



BASCANIUM FLAGELLIFORME, Catesby, subspecies TESTACEUM, Say. 



Coluber testaceus, SAY, Long's Exped. Rocky Mts., ii, 1823, 48. HARLAN, Jour. Acad. 



Nat. Sc-i. Pliila., v, 1827, 348. HOLBROOK, N. A. Herp., iii, 1842, 03. 



HARLAN, Med. & Pliys. Res., 1835, 113. 

 Masticophis testaccm, BAIED & GIRARD, U. S. & Mex. Bound. Surv., ii, Kept, 1859, 20. 



BD., P. R. R. Rep., x, 1859, 43. COPE, Proc. Acad. Nat. Sci. Pbila., 



1800, 305. 



firymobius tcstaceus, COPE. Proc. Acad. Nat. Sci. Phila., 1800, 501. 

 Psammophis flavigularis, HALLOW., Proc. Acad. Nat. Sci. Phila., vi, 1852, 178. J*/., 



Sitgreave's Exp. Zufii & Col. Riv., 1853, 131-140. 



Masticophis favigularis, BAIRD & GIRARD, Cat. N. A. Kept, pt. i, Serp., 1853, 99, 159. 

 Herpetodryas flarigularis, HALLOW., P. R. R. Rep., x, 1859, 12. 

 Bascanium Jlai/elliforme, CATESBY, subspecies testaceuw, SAY, COPE, Check-List N. A. 



Batracb. & Rept., 1875. 40. 



HAB. Lower California!! and Sonoran Regions, witb Nevada, Utah, and Texas. 



Very abundant in regions visited, and particularly noticeable on account 

 of diversity and mimicry of color, depending in a marked degree upon the 

 character of locality where found. 



