158 LAND AND FRESH- WATER SHELLS OF N. A. [PART IV. 



which is subcarinated ; on each whorl of the spire is a revolving 

 granulated line above the carina ; color olive-brown. 

 Habitat. — Savannah River. — Conrad. 



Melania percarinata. — Elongate-conoidal ; volutions of the spire 



with a carinated line below the middle, and a revolving granulated 



Fig. 303. JiiiG above ; body-whorl with a granulated i*evolving line 



near the suture, and three carinated lines, the superior one 



largest, the lower one fine ; color dark olive-brown. 



Habitat. — Savannah River. — Conrad. 



Melania nebulosa. — Elongate-conoidal; volutions six or 

 seven with revolving raised lines ; whorls of the spire cari- 

 nated below the middle, above which they are longitudi- 



^ '^ Fig. 303. 



nally ribbed, and have two or three revolving granulated 



lines ; granules compressed ; aperture widely elliptical ; 

 color ochraceous, with brownish-black stains. 

 Habitat. — Savannah River. — Conrad. 



The figure of carinifera is copied from Delessert 

 and represents the original specimen of Lamarck's 

 description. That of percarinata is from Mr. 

 Conrad's plate. G. bella (fig. 301) is from the tj'pe specimen 

 in possession of Prof. Haldeman. Dr. Brot was the first 

 author on Melanidse to recognize the identity of all these 

 species. The following description also belongs to this species, 

 which exhibits many varieties, but may be known through them 

 all by its encircling row of beadlike elevations. 



Fig. 304. Melania hella-crenata. — Shell reddish, subulate, whorls 

 eleven, marked with a strong carina and a crenulated line 

 posterior to it. 



Habitat. — Alabama. 



Length % of an inch. 



Observations. — Differs from M. bella, Con., by having an 

 oval aperture. — Haldeman. 



Melania monilifera, Anthony, unpublished, but quoted in 

 Jay's Catalogue, belongs here, as I have ascertained by a 

 specimen so labelled by Mr. Anthonj^ in Coll. Gould. 



I have seen specimens of carinifera from Yadkin River, S. C, 

 and from North Alabama, but in Georgia it is exceedingly 

 numerous in the Savannah and other rivers. 



