540 



ZOOLOGY BATEACHIANS AND REPTILES. 



cies. The specimen marked Y Y Y has had the tail broken, and it is 

 capped by a horny segment. 



PITYOPHIS SAYI, Schlegel, subspecies BELLONA, Baird & Girard. 



a. SAYI. 



Coluber melanoleucus var. sayi, HARLAN, Jour. Acad. Nat. Sci. Phila., v, 1827, 3GO. 



Id., Med. & Pbys. Res., 1835, 123. 

 Coluber sayi, SCHLEGEL, Ess. Physiog. Serp., 1837, 157 (not Corondla sayi, HOLBROOK, 



iior Coluber sayi, HARLAN, which are Ophibolus). BAIRD & GIRARD, Cat. 



N. A. Rept., pt. i, Serp., 1853, 151. 

 PityopMs sayi, BAIRD & GIRARD, Cat, N. A. Rept., pt. i, Serp., 1853, 152 (in text). 



KENNICOTT apud COOP. & SUCKL., Nat, Hist. Wash. Terr., 1860, 300. 



HAYD., Traus. Philo. Soc. Phila,, xii, 1862, 177 (not found in the Souoran 



region.) 



b. BELLONA. 



Churchillia bellona, BAIRD & GIRARD, Staus. Rep. Exp. Great Salt Lake, 1852, 350. 

 Pityophis affinis, HALLOW., Proc. Acad. Nat. Sci. Phila,, vi, 1852, 181. HALLOW., 



Sitgreave's Rep. ZuSi & Col. Riv., 1853, 130, 146. 



Pitwophis bellona, BAIRD & GIRARD, Cat. N. A. Rept., pt. i, Serp., 1853, 66, 157. 

 Pityophis bellona, KENNICOTT apud BD., P. R. R. Rep., x, 1859, 42. BD., P. R. R. 



Rep., x, 1859, 19. KENNICOTT apud BD., U. S. & Mex. Bound. Surv.. ii, 



Rept., 1859, 18. COPE, Proc. Acad. Nat. Sci. Phila,, 1866, 305. ALLEN, 



Proc. Bost. Soc. Nat, Hist., xvii, 1874, 69. 

 Pityophis sayi, SCHLEGEL, var. bellona, BAIRD & GIRARD, COPE, Check-List N. A. 



Batrach. & Rept., 1875, 30. 



HAB. Souoran and Pacific Subregious, with Nevada and Utah. 



Abundant throughout the regions visited. A full suite of specimens 

 secured, showing great diversity of coloration and variability of head shields, 

 as alluded to by Professor Cope (Proc. Acad. Nat. Sci. Phila,, 1866, 305). 



