SYSTEMATIC LIST AND SYNONYMY. 151 



P H I D I A— Continued. 



Coop., 1860, P. K. E. Eep., XII (2), 300; Hay.len, 1S62, Trans. Phil. 



Soc, 177. P. satji subsp. aayi Cope, 1875, Checklist, 39. P. McClcl- 



lanii B. & G., ISfjS, Serp., 68, — 1854, iMarcy's Exp., 196, pi. 5; Bd., 



1859, P. R. It. Rep., X, pi. 29, f. 47. 



Rocky Mountaius to Illinois. 



Var. >rEXicANUs 52 



Pityoplm mcdcamis D. & B., 1854, Erp., VII, 236; Jan, 1863, Sist., 59, 

 — 1867, Icon., livr. 22, pi. 2, f. 1. Aruisime mcxicunm D. & B., 1854, 

 Erp., Atlas, pi. 62. (?) Pityophis myi var. mexicanm Cope, 1875, 

 Checklist, 39. (?) P. sayi subsp. mexicanm Yarr., 1875, Wheeler's 

 Rep., V, 539. (?) P. sayi mexicanus Cope, 1880, Bull. 20, U. S. Mus., 

 23. Mexico. 



Var. DEPPEi 



Elaphii deppei T>. & B., 1854, Erp., VII, 268. Pityoplm deppei Jan, 

 1863, Sist., 59, — 1867, Icon., livr. 22, pi. 2, f. 2. P. deppei var. p/ioii- 

 dosticlKs Jan, 1863, Sist., 59. Arizona elegans (Kenn.) Bd., 1859, P. E. 

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

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

 p. 618. (?) vlri^oiiajaiii Cope, 1860, Pr. Phil. Ac, 369. (?) Arizona 

 lineaticoUis Cope, 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 to 4. Prefrontals com- 

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

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



in shape. Head nearly uniform light. 



Arizona to Mexico. 



Var. BELLONA 53 



aiurchilUa bellona B. & G., 1852, Stansbury's Exp., 350. Pityophis bel- 



lona B. & G., 1853, Serp., 66, 157 ; Gthr., 1858, Cat., 87; (Kenn.) Bd., 



1859, P. R. R. Eep., X, 42, pi. 28, f. 46,— Mex. Bound., II, 18; 



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



sayi var. helloim Cope, 1875, Checklist, 39. P. sayi subsp. bellona 



Yarr., 1875, Wheeler's Eep., V, 540, & Coiles, p. 617; Coues & Yarr., 



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



— 1853, Sifgr. Exp., 130, 146. 



The Utah basin. 



Elapuis 53 



Aldrovandus, 1040, Hist. Serp. Drac, 267 (re-print, 1765); Bonap., 

 1831, Saggio. Dum., 1852, Mem. Sci. Nat., XXIII, 453; D. & B., 1854, 

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

 Icon., pi. 27, — 1843, Syst., 26. 



(SCOTOPHIS. ) 



Elapuis obsoletus (Black Snake) 54 



Coluber obsoletm Say, 1823, Long's Exp., I, 140; Harl., 1827, Jour. Phil. 

 Ac, 347, -- 1835, Med. Ees., 112. Scotophis obsoletm Kenn., 1860, Pr. 

 Phil. Ac.; 3.30. Coluber obsoletus subsp. obsoletus Cope, 1875, Checklist, 

 39. ElajMs sjnloides D. & B., 1854, Erp., VII, 269; Gthr., 1858, Cat., 

 90. Mississippi Valley. 



