84 CONCHOLOGIA CESTRICA. 
G. Virginica, GMELIN. 
G. Virginica. Buccinum Virginicum, Gmelin, Syst. Nat., 
TL Me ay ck 
Shell, rather thin, smooth, elongated; 
whorls 6, or 7, slightly convex, upper ones 
carinate; aperture oblong-elliptical; color 
brown, or olivaceous, usually with two re- 
volving, reddish bands; within bluish- 
white. H. 25-32, W. Io, mill. 
Station, Schuylkill River, Chester County; abundant. 

G. Virginica, var. multilineata, Say, Jour. Acad. 
Phila, 1. 1822, 
Shell, resembling the preceding, but with numerous, 
filiform, elevated, sub-equal, lines; from ten to twenty 
on the body whorl. 
Station, found with the preceding. 
Genus ANCULOSA, Say, 1821. 
Shell, solid, ovate, or globose; spire very short; 
columella callous above; peristome almost as large as 
the whole shell, not continuous; opercle corneous, 
semi-concentric, or pauci-spiral. 
A. dissimilis, Say. 
Paludina dissimilis, Say, Nich. Encyc., 3d Edit., 
Rome: 
TD. Shell, thin, ovate, conical; whorls 3-4; 
. body whorl large, more or less carinate in 
the middle, carina sometimes double, or 
wanting; aperture ovate; columella flat- 
tened at base, and occasionally toothed; 
color olive-green, or yellow. H. 12, W. 8, mill. 

