20 
hirsute vesture. I found several specimens of jejuna^ during an 
excursion some time since into East Florida, at the Cow Fort on 
St. John River. It is in the collection of the Academy. 
II. CONCAVA. — Shell much depressed, suborbicular, horn color, 
or whitish, immaculate ; volutions five, irregularly wrinkled across, 
more convex beneath ; suture distinctly impressed ; umbilicus 
very large, exhibiting all the volutions to the summit distinctly ; 
aperture large, short ; labrum towards the base very slightly and 
inconspicuously reflected. 
Inhabits Illinois and Missouri. Greatest width seven-tenths of 
an inch. 
Found in moist places near the Mississippi River, on the Mis- 
souri as high as Council Bluff, and on the Sea Islands of Georgia, 
It is a much depressed shell. 
H. DEALBATA. — Shell couical, oblong, thin and fragile, some- 
what ventricose ; volution 6-7, wrinkled across, wrinkles more 
profound and acute on the spire ; spire elevated, longer than the 
aperture, sub-acute ; aperture longer than wide, labrum not re- 
flected ; umbilicus small and profound. 
Lensfth more than three-fourths of an inch, breadth nine-twen- 
tieths of an inch. In the Cabinet of the Academy and Philadel- 
phia Museum. Inhabits Missouri and Alabama. 
In outline it resembles a Bulimus. Four specimens of this 
species were sent to the Academy from Alabama, by Mr. Samuel 
Hazard ; and a single depauperated specimen was found by my- 
self on the banks of the Missouri. 
H. PROFUNDA. — Shell pale horn color ; spire convex, very little 
elevated; whorls five, regularly rounded, and wrinkled trans- 
versely ; body whorl with a single revolving rufous line, which is 
almost concealed on the spire by the suture, but which passes for 
a short distance above the aperture ; aperture dilated ; labrum 
reflected, white, and excepting near the superior angle, flat ; a 
slightly projecting callus near the base, on the inner edge ; um- 
bilicus large, profound, exhibiting all the volutions to the apex. 
Transverse diameter nineteen-twentieths of an inch. 
Var. a. — Multilineated with rufous. Var. b., rufous line obso- 
lete. Inhabits Ohio, Mississippi and Missouri banks. 
A pretty shell, neatly ornamented with the rufous zone; the 
spire is very much depressed. Specimens occurred near Cincin- 
