20 



hirsute vesture. I found several specimens of jejuna, during an 

 excursion some time since into East Florida, at the Cow Fort ou , 

 St. John Eiver. It is in the collection of the Academy, 



II. CONCAYA. — 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 Eiver, on the Mis- 

 souri as high as Council Blufi, 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 G-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. 



Length 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 myself 

 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- 



