144 SYSTEMATIC LIST AND SYNONYMY, 
OPHID{I A—Continued. 
(TRETANORHINUS, ) 
PIRGIGOPS WARTABYGIS co) <1 <))s710) seo) vals) o) oleic cuutesroi te etoile at me 
Tretanorhinus variabilis D, & B., 1854, Erp. Gen., VII, 349; Jan, 1863, 
Sist., 76. Helicops agassizii Jan, 1863, Sist., 76, — 1868, Icon., livr. 28, 
pl.2, £1. Tretanorhinus variabilis var. adnecus Jan, 1863, Sist., 76. 
Nicaragua to Mexico. 
HIELICOPS NIGROLUTEUS - .--....-.. «=. - Sa omhooo Od oe 
Tretanorhinus nigroluteus Cope, 1861, Pr. Ac, Phil., 298. 
Head narrow, slightly distinct. Rostral broader than high, sepa- 
rated from internasals by the nasals, Nasal in two parts, nostril 
between. Prefrontals as long as frontal. Anterior border of frontal 
equal to lateral. Loreals two, anterior smaller. Oculars 2—2. La- 
bials 8, fourth in orbit. Infralabials 10. Scales keeled, in 21 rows. 
Ventrals 136. Anal bifid. Black above; yellow beneath; punctu- 
lated anteriorly, punctulations forming bands near the flank. 
Central America, 
HELICOPS ALLENIT.... . OR Cec omCteoko Oem oe do. | Bu! 
Garman, 1874, Pr. Bost. Soc., 92; Cope, 1875, Checklist, 43. 
Florida. 
FE VDROPS-.16, 6.6) 6 50) ve: tense. tel ver ike) Bic [tof ONC MSNENN Uhm cmc Secon. Si! 
Wagler, 1830, Amph., 170; Gray, 1842, Zodl. Mise., 67; Fitz., 1843, 
Syst., 25; Gray, 1849, Cat. Serp., 75. 
HyYbROPS ERYTHROGRAMMUS . - - + +s - Som Gncwoed Gc cra oo Se 
Coluber erythrogrammus Latr., 1802, Rept., TV, 141; Daud., 1803, Rept., 
VII, 93, pl. 83, f. 2; Harl., 1827, Jour. Phil. Ac., 361; Holbr., 1836, 
Herp., I, 115, pl. 22. Abastor erythrogrammus B. & G., 1853, Serp., 
125; Bd., 1859, P. R. R. Rep., X, pl. 33, f. 93; Gray, 1849, Serp., 78; 
Gthr., 1858, Cat., 275. Calopisma erythrogrammus D. & B., 1854, Erp., 
VII, 336; Mart., 1856, Mus. Berl., 27; Jan, 1863, Sist., 75, — 1868, 
Icon., livr. 29, pl. 4, f. 2, pl. 5, f. 1. Homalopsis erythrogrammus Boie, 
1827, Isis, 551.  Helicops erythrogrammus Wagl., 1830, Amph., 170; 
Holbr., 1842, Herp., III, 107, pl. 25. Homalopsis plicatilis var. Schleg., 
1837, Essai, 173, II, 353. Natrix erythrogrammus Merr., 1820, Amph., 
1bWe 
Tlinois and Virginia southward. 
Hyprops ABAcurus. ... , Pee eat ROTORS. Ov. GI peo, ats 
D. & B., 1854, Erp., Atlas, pl. 65. Calopisma abacurum D. & B., 1854, 
Erp., VII, 342; Mart., 1856, Mus. Berl., 27. Ielicops abacurus Holbr., 
1842, Herp., TIT, pl. 26. Hydrops reinwardtii Gray, 1842, Zodl. Mise., 
67. Homalopsis reinwardtii Schleg., 1837, Essai, I, 178, II, 357. 
Farancia fasciata Gray, 1849, Cat., 74; Gthr., 1858, Cat., 275. Faran- 
cia drummondi Gray, 1842, Zodl. Mise., 68. Farancia abacurus B. & 
G., 1853, Serp., 123; Bd., 1859, P. R. R. Rep., X, pl. 33, f.92. Calo- 
pisma reinwardtii Jan, 1863, Sist., 75, — 1868, Icon., livr. 29, pl. 6, f 
1-2, 
The Carolinas to Texas, 
