SYSTEMATIC LIST AND SYNONYMY. 165 
re) PHIDI A—Continned. 
WOU 6 6 oo oh Oho GUO .oNO Ouoed—O CUOTOLG oo OG Cedi omc! Glo OECmCunD 
Baird & Girard, 1853, Cat. N. A. Serp., 116. 
Head distinct. Frontal divided transversely. Nasal in two parts. 
Loreal entering orbit, fused with the lower anteocular. Oculars 1—2. 
Mentals one pair. Eyes rather large, pupil round. Scales smooth. 
Anal bifid. Subcaudals in two rows. 
ILODIA TENUIS- «+5 3 © 2 © © « SS 0 Ga GO Oo DID ONO IO OTOHC Cc 
B. & G., 1853, Serp., 116; Bd., 1859, P. R. R. Rep., X, pl. 36, f. 8; Cope, 
1875, Checklist, 36. Calamaria tenuis B. & G., 1852, Pr. Phil. Ac., 176. 
Body slender, subcylindrical; tail short, conical, tapering. Frontal 
hexagonal, lateral borders parallel. A small subelliptical shield 
between prefrontals and frontal. Internasals subtriangular, about 
half as large as prefrontals. Rostral broad. Nasal in two parts, 
nostril between. Loreal large, elongate, entering the orbit, fused 
with lower anteocular. Oculars 1—2. Anterior temporal largest, 
elongate. Labials 6. Infralabials 6, fourth largest. One pair of 
mentals, Scales rather large, smooth, in 15 rows, outer broader. 
Ventrals 150. Anal entire. Subcaudals 33 pairs. Brown aboye, 
bluish laterally, with a longitudinal stripe of lighter on each flank. 
Belly lighter, bases of scutes bluish. 
-Oregon and Washington Territories. 
IMPROV G 6 5. O10 7 Gab. Gu GubieG tOLOeC -OncHosOMGECrO Ems ee ore 94 
B. & G., 1853, Serp., 49. Streptophorus D. & B., 1854, Erp., VII, 514. 
NIADA ULTPAGAINNT cute: Wohlea vay cal eiicotielis) (on SOM Rom) @, ver ve) Syney oy a wo 95 
Chersodromus licbmanni Reinh., 1860, Vid. Medd. Kjobenh., 35, pl. TV, 
f. 10,11; Cope, 1861, Pr. Phil. Ac., 302; Jan, 1862, Arch. Zodl., I, 
25, — 1865, Icon., livy. 12, pl. 3, f. 2. 
Vera Cruz, Mexico. 
Maw SHS. 0 Sto PR ODO Oo ae 0 GOO O Oo ope cam 
Cope, 1860, Pr. Phil. Ac., 340. Streptophorus sebae D. & B., 1854, Erp., 
VIL, 515; Gthir., 1858, Cat., 16; Jan, 1862, Arch. Zodl., II, 26, 27, — 
1863, Sist., 34, — 1865, Icon., livr. 12, pl. 3, f. 4; Mart., 1856, Mus. 
Berl., 28. 
Mexico, 
INTNTAG COWMARISUrelwenitel to) oi slits) oe) 6) coy oiet once (6) (oy = Ve] ofa sim be, fo) 8 90 
Streptophorus sebae var. collaris Jan, 1865, Icon., livr. 12, pl. 2, f. 6. 
Mexico, 
INJESWA NSU TOD IS eG) OG Onc Ol mG dootrO Oet)oeteod canec  equceet') 
Elapoides sieboldi Jan, 1862, Arch. ZoGl., Il, 21, — 1863, Sist., 38, — 
1865, Icon., livr. 12, pl. 1, f. 4. 
Mexico. 
ININTASDIADEMADAG Ia cies) <> ieee) s 6) 6 6).6) a 6 oe ee te ss | 88 
B. & G., 1853, Serp., 49; Bd., 1859, P. R. R. Rep., X, pl. 27, f. 37. 
Tropidonotus dimidiatus Cope, 1861, Pr. Phil. Ac., 297. Streptophorus 
bifasciatus D, & B., 1854, Erp., VII, 520; Cope, 1860, Pr. Phil. Ac., 
77; Jan, 1862, Arch. Zodl., II, 26, — 1863, Sist., 34, — 1865, Icon., 
livr. 12, pl. 3, f. 3. Mexico. 
