Descriptions of New Fluviatik Shells. 



Habitat. Alabama. 

 My cabinet. 



Obs. A short shell, almost like an Anculosa ; a single speci- 

 men only is before me, but is too remarkable to be confounded 

 with any known species. 



The uncommonly broad, dark band, surrounded by the 

 generally yellow epidermis, gives it a lively appearance. 



41. Iflelania plena. 



Plate III. Fig. 21. 



T. oblongo-ovata, glabra, crassa, fusco-virescente ; spira parura ele- 

 vata, decollata ; anfr. 4-5, convexis, ultimo raagno, in medio subcon- 

 stricto, fasciis duabus obscuris ; suturis irregulariter valde impressis ; 

 apertura magna, subrhomboidea, intiis livida et fasciata ; columella recta, 

 torta, foveata, in sinum profundum angustum producta. 



Shell oblong ovate, smooth, thick, dark olive-green ; spire 

 abruptly decollate, not elevated ; whorls 4-5, convex ; body 

 whorl large, a little constricted in the centre, having two very 

 faint, distant .bands, more distinct in the interior ; sutures irre- 

 gularly and distinctly impressed ; aperture large, sub-rhom- 

 boidal, within livid and banded; columella strongly indented 

 and twisted, with a strong sinus at base. 



Length 0.80 inch (21 millim.). Diam. 0.45 inch (11 millim.). 



Length of aperture 0.42 inch (11 millim.). 



Breadth of do. 0.20 inch (5 millim.). 



Habitat. Alabama. 

 My cabinet. 



Obs. A strong, corpulent shell, of a dark, livid color, which 

 cannot well be confounded with any other ; its most prominent 

 characters are, its full broad form, the paucity of its whorls, 

 and its strongly indented columella. 



