604 NORTH AMERICAN SNAKES — COPE. 



Helicops erytbrogammus Wagl., Nat. SyvSt. Ampb., 1830, 170; Holbr., N. Amer. Herp., 



2d ecL, HI, 1842, 107, PI. xxv. 

 Eomalopsis erythrogrammus Boie, Isis, 1827, 551 ; Calopisma erylhrogrammum Dnm. 



and Bibr., Erp. Geu., viii, 854 ; Jan, Icon. Gen. Ofid., ii, 29, iv, Fig. 2. 

 Hydrops erythrogrammus Garinan, Mem. Mus. Comp. Zoul. Cambr., viii, 1843, p. 144. 



Austroriparian region, eastern part, inckiding Florida. 



FARANCIA Gray. 



Cat. Snakes Brit. Mns., 1848, p. 74; Bd. and Gird,, Cat. Serp. N. Atner., 1853, p. 123; 

 Cope, Bnll. U. S. Nat. Mus 32, 18.s7, p. 52. 



Head slightly distinct from the body. Internasal plate single. One 

 nasal grooved beneath the nostril. No preorbital ; prefrontal and loral 

 constituting the anterior portion of the orbit. Postorbitals present. 

 Scales smooth. Postabdominal scutella bifid. Snbcaudals in pairs. 



This genus is known from the Louisianian district of the Austroripa- 

 rian region. It does not occur in the Texan district and is rare in the 

 Floridan. It is represented by only one species, which is defined as 

 follows : 



Dorsal scales in nineteen rows ; superior labials seven; two postoculars ; tail from 

 one-fiftli to one-seventb total length. Bluish black, with snbquadrate red spots 

 on the sides ; belly red, with bluish-black spots F. abactira. 



Faraiicia abaciira Holbrook. 



Bd. and Gird., Cat. N. Amer. Snakes 1853, p. 123; Cope Check List Batr. Rept. N. 



Amer. 1875, 35. 

 Colnhur abacurm Holbr., N. Amer. Herp. i, 1836, 119, PI. xxiii. 

 Romalopsis Reinwardtii Schl., Ess. Phys. Serp. Part, descrip., 1837, 357. 

 Hydropti Beinwardtii Gray, Zool. Misc. 1842, 67. 

 Hydrops abacurus Dum. & Birb., Erp. Geu. Tab. 65. 

 Helicops abacurus Holbr., N. Amer. Herp. 2d ed. iii, 1842, iii, PI. xxvi. 

 Farancia Drummondi Gray, Zool. Misc. 1842, 66. 

 Farancia fasciata Gray, Cat. of Snakes, Brit. Mus. 1849, 74. 

 Calopisma abacurum Dum. Bibr., Erp. Geu. vii, 1854. 



Hydrops abacurus Garman, Mem. Mus. Comp. Zool. Cambr. vili 1843, p. 144. 

 Calopisma Beinwardtii Jan, Icon. Geu. Ofid. ii, 29 vi, figs. 1, 2. 



Dr. R. W. Shufeldt found this species abundant near Xew Orleans. 

 He says that it is generally present in swampy ground, or on the shores 

 of water, coiled beneath logs and other objects. It is of a gentle dis- 

 position, and grows to a considerable size, one specimen sent by him 

 to the National Museum measuring nearly 6 feet in length. The spe- 

 cies ranges north to southern Indiana. 



Louisianan district of Austroriparian Kegion. 



CHIONACTIS Cope. 



Proc. Acad. Phila. 1861, p. 303 ; Check List N. Amer. Batr. Rept. 1875, p. 35 ; Bull. 

 U. S. Nat. Mus.. 1687, p. 53. Lamprosoma Hallowell, Proc. Acad. Phila. 1856, p. 

 310; Report Surv. U. S. Pac R. R. x 1859, Williamson's Rept., p. 15; (preoc- 

 cupied). 



