Descriptions of New Fluviatile Shells. 



impressed ; aperture irregularly ovate ; outer lip waved ; inside 

 of the aperture whitish or brownish, often with obscure bands ; 

 columella rounded, extending into a broad, shallow sinus. 



Length 0.66 inch (17 millim.). Diam. 0.38 (10 millim.). 



Length of aperture 0.35 inch (9 millim.). 



Breadth of do. 0.19 inch (5 millim.). 



Habitat. Nolen river, Kentucky. 



My cab. Cab. Lye. Nat. Hist., N. Y. Cab. B. W. Budd. 



Obs. A somewhat variable species ; the remarkably shoul- 

 dered body whorl will, however, readily distinguish it ; differs 

 from M. obovata Say by its more distinct spire, its greater pro- 

 portionate breadth, and by the form of the aperture ; it is also 

 much less ponderous ; many specimens are obscurely banded 

 on the body whorl, this is more distinctly visible in the young 

 shell. 



46. Melania consangiiinea* 



Plate III. Fig. 26. 



T. ovata-, glabra, crassa, fusco-virente ; spira brevi, acuminata ; anfr. 

 8, superioribus subplanis, duobus ultimis humerosis, ultimo permagno, 

 in medio vix constricto ; suturis impressis ; apertura magna, ovata, 

 intus livida ; coiuraella incurva, purpureo-tincta, sinum vix formante. 



Shell ovate, smooth, thick, brownish olive ; spire short, acu- 

 minate ; whorls 8, the upper ones nearly flat, the last two or 

 three much shouldered ; body whorl very large, slightly con- 

 stricted in its upper portion, and very faintly banded ; sutures 

 deeply impressed ; aperture regularly ovate, within livid, 

 approaching to purple far within ; columella rounded, with 

 scarcely a perceptible sinus, tinged with purple at base. 



Length 0.75 inch (20 millim ). Diam. 0.40 inch (10 millim.). 



Length of aperture 0.40 inch (10 millim.). 



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



