Descriptions of New Fluviatile Shells. 



beautiful reddish-purple, coluraella slightly curved, indented, 

 and with a narrow, recurved sinus at base. 



Length 0.62 inch (16 millim.). Diam. 0.34 inch (8 millim.). 



Length of aperture 0.31 inch (8 millim.). 



Breadth of do. 0.17 inch (4 millim.). 



Habitat Tennessee. 

 My cabinet. 



Obs. I know of no species with which this is liable to be 

 confounded; its ample body whorl, 'the broad, angular, and 

 shelving shoulder on the body and penult whorls, while the 

 upper ones are wanting in this character, and above all the 

 tabulation of the penult whorl, are its most striking character- 

 istics, and will at once distinguish it from all other species ; 

 the lines of growth are rather coarse, curved, and approximate. 



39. Ittelania clara. 



Plate III. Fig. 19. 



T. ovato-conica, glabra, subcrassa, stramineo-virente ; spira parum 

 elevata ; anfr. 7, superioribus planis, rapide crescentibus, purpureo-uni- 

 fasciatis, ultimo magno, subangulato, quadrifasciato ; suturis valde im- 

 pressis ; apertura magna, ovata, intus fasciata ; columella subrecta, in 

 sinum inconspicuum producta. 



Shell ovate, smooth, thick ; spire not elevated ; whorls 7, 

 flat, nearly smooth ; upper ones rapidly enlarging to the body 

 whorl, which is very large, and ornamented with four conspi- 

 cuous brown bands, on a clear and well contrasting yellow 

 ground ; the upper band is distant and alone, near the suture, 

 while the others are crowded and below the middle ; sutures 

 impressed ; aperture large, ovate, banded inside ; columella 

 nearly straight, with no remarkable sinus at base. 



