120 Descrijitions of New Fluviatile Shells. . 



Length 0.70 inch (18 millim.). Diara. 0.38 inch (10 millim.). 

 Length of aperture 0.40 inch (10 millim.). 

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



Habitat — Alabama. 

 My cabinet. 



Obs. — Allied to M. olivula Con. in general form, but seems to 

 differ by its body whorl, which is sub-angulated at its upper 

 part, near the top of the aperture, and slightly so at the mid- 

 dle ; the whorls of the spire have only one band, which is 

 above the middle ; lines of growth distinct, giving the upper 

 whorls a slightly varicose character. 



40. Melania fusco-cincta. 



Plate III. Fig. 20. 



T. ovata, glabra, subcrassa, stramineo-fusca ; spira brevi ; anfr. 4-5, 

 superioribus nigro-unifasciatis, ultimo magno, angulato, fasciis nigris latis 

 duabus una, supra et altera subter angulum revolventibus ; suturis valdo 

 irapressis ; apertura, magna,, late ovata, intus fasciata, ; columella in- 

 curva, reflexa, foveata, sinum vix formante. 



Shell ovate, smooth, moderately thick ; spire very short, 

 consisting of 4-5 nearly flat whorls, with a broad, dark-brown 

 band revolving in the centre of each ; body whorl large, with 

 one band above the middle, and another at base, subangulated ; 

 sutures irregularly impressed, distinct ; columella well rounded, 

 indented and reflected at the middle so as partially to conceal 

 a small umbilical opening ; aperture large, broad-ovate, within 

 banded. 



Length 0.44 inch (11 millim.). Diam. 0.30 inch (7i millim.). 



Length of aperture 0.25 inch (6 millim.). 



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



