Descriptions of New Fluviatile Shells. 

 49. jflelaiiia neglect a. 



Plate III. Fig. 29. 



T. conical, glabra, tenui, straminea; spira elevata ; anfr. 10, superio- 

 ribus subplanis ssepe unifasciatis, lira supra suturam decurrente, in anfr. 

 penultimo obsoletiore ; anfr. ultimo subangulato, obscure bisulcato, ssepe 

 nigro-bifasciato ; suturis impressis ; apertura ovata, intus albido-rosacea ; 

 labro sinuoso ; columella subrecta, torta, rosacea, in sinum profundum 

 recurvata. 



Shell conical, rather thin, light yellow; whorls 10, upper 

 ones nearly flat, with a slight ridge revolving just above the 

 suture. This ridge disappears as it approaches the penult 

 whorl, but two of them become visible on the last whorl, which 

 is subangulate. Sometimes the last whorl is encirled by two 

 dark brown bands, of which the uppermost is also visible 

 throughout the upper whorls, covering the ridge above men- 

 tioned ; sutures impressed ; aperture ovate, of a delicate rosy 

 hue within ; outer lip waved ; columella nearly straight, twisted, 

 roseate, recurved into a deep sinus. 



Length 0.90 inch (23 raillim.). Diam. 0.38 inch (10 millim.). 



Length of aperture 0.33 inch (8 millim.). 



Breadth of do. 0.18 inch (4J- millim.). 



Habitat. Great Miami river, near Dayton, Ohio. 



My cab. Cab. Lye. Nat. Hist., K Y. B. W. Budd, M.D. 



Obs.A. fine large species, which seems to exhibit consider- 

 able variation, both in form and coloring. The banded varie- 

 ties are among our most beautiful species, while we also find 

 those which are of a plain, delicate horn color, or with bands 

 but faintly indicated by an almost imperceptible difference of 

 color in the interior of the mouth, which in those specimens is 

 generally, and in the banded specimens occasionally, tinged 

 with a delicate rosy hue. 



