SYSTEMATIC LIST AND SYNONYMY. 151 



P H I D I A— Continued. 



Coop., 1860, P. R. R. Rep., XII (2), 300; Hayden, 1862, Trans. Phil. 



Soc, 177. /'. sayi subsp. sayi Cope, 1875, Checklist, 39. P. McClel- 



lanii B. »v <;., 1853, Serp., 68, 1854, Marcy's Exp., 196, pi. 5; Bd., 



1859, P. EL R. Etep., X, pi. 29, f. 47. 



Rocky Mountains to Illinois. 



Var. MEXICANTJS 52 



Pityophis mexicanvs D. & B., 1854, Erp., VII, 236; Jan, 1863, Sist, 59, 



— 1867, [con., livr. 22, pi. 2, f. 1. Anasime mexieanus D. & B., 1S54, 

 Erp., .Atlas, pi. 02. (?) Pityophis sayi var. wkv/Vio/im < "pe, 1875, 

 Checklist, 39. (?) P. sayi subsp. mexieanus Yarr., 1S75, Wheeler's 

 Rep., V, 539. (?) P. sayi mexieanus Cope, 18S0, Bull. 20, U. S. Mus., 

 23. Mexico. 



Var. DEPPEr 



Elaphis deppei D. & B., 1854, Erp., VII, 208. Pityophis deppei Jan, 

 1863, Sist., 59, - 1867, Iron., livr. 22, pi. 2, f. 2. J', deppei var. pholi- 

 dostictus Jan. 1863, Sist, 59, Arizona elegans i Kenn.) Bd., 1859, P. R. 

 R. Rep., X, 42, — 1859, Mex. Bound., II, pi. XIII. Pityophis elegans 

 Cope, 1875, Checklist, 39; Yarr., 1S75, Wheel. Rep., V, 541, & Coues, 

 p. 018. (?) Arizona jani Cope, 1860, Pr. Phil. Ac., 369. (?) Arizona 

 KneaUcoUis (.'ope, 1861, Pr. Ac. Phil., 300. 



Scales in 29 to 31 rows, keels of vertebral low to obsolete. Oculars 

 1 to 2 — 2. Loreal narrow. Temporals 3+3 t<> 4. Prefrontals com- 

 monly two, sometimes four. Ventrals 235; anal entire; subcaudals 

 07 pairs. Dorsal and lateral series of blotches more or less irregular 



in shape. Head nearly uniform light. 



Arizona to Mexico. 



Var. luiioNA 53 



Clmrchillia beUona B. & G., 1852, gtansbury's Exp., 350. Pityophis bel- 



lona B. & G., 1853, Serp., 00, 157 ; Gthr., 1858, Cat., 87; i Kenn. I Bd., 



1859, P. R. R. Rep., X, 42, pi. 28, f. 40,— .Mex. Bound., II, 18; 



Cope, 1866, Pr. Ac. Phil., 305; Allen, 1874, Pr. Bost Soc, 69. P. 



sayi var. beUona Cope, 1875, Checklist, 39. P. sayi subsp. beUona 



Yarr., 1875, Wheeler's Hep., V, 540, & Coues, p. 017; Coues A Yarr., 



1878, Ilayd. Rep., IV. 282. P. affinis Hall., 1852, Pr. Phil. Ac, 181, 



— 1853,, Sitgr. Exp., 130, 140. 



The Utah basin. 



Elaphis 53 



Aldrovandus, 1040, Hist. Serp. Drac, 207 (re-print, 1765); Bonap., 

 L831,Saggio. Dum., 1852, Mem. Sci. Nat., XXIII. 15.".; D. <& 1',, 1854, 

 Erp., VII, 243; Gthr., 1858, Cat., 92. Elaphe Fitz., 1833, Wagler's 

 [con . pi. 27, 1843, Syst., 26. 



(SCOTOPHIS. I 



Elaphis obsoletus (Black Snake) 54 



Coluh.r obsoletus Say. 1823, Long's Exp., I, 140; Harl., 1827. Jour. Phil. 

 Ac, 347, — 1835, Med. Res.. 112. Scotophis Obsoletus Kenn., 1800, Pr. 

 Phil. Ac, 339. I obsoletus subsp. obsoletus Cope, 1875, Checklist, 



39. Elaphis spiloidei I'. & B., 1854, Erp., VII. 209; Gthr.. 1858, Cat., 

 90. Mississippi Valley. 



