228 ON THE NAIADES, 



Hab. Hopeton, near Darien, Georgia. Professor Shepard. 



My Cabinet. 



Cabinet of Professor Shepard. 



Diam. 1-4, Length 1-7 inches. 



Remarks. — I owe to the kindness of professor Shepard of New- 

 Haven this interesting shell. It was procured by him during his late 

 geological investigations in our southern states, with other shells, de- 

 scriptions of which will be found in these memoirs. It resembles the 

 A.fasduta (Lam.), but is less globose, the whorls of our species being 

 somewhat flattened on the side and top. It diflfers from the Jl. depressa 

 (Say), described in major Long's expedition to St Peter's river (subse- 

 quently changed to ^. paludosa in the Disseminator), in being less 

 globose, and in being flatter on the side and superior part of the whorls. 



Paludina Georgiana. Plate XIX. fig. 85. 



Testa ventricoso-conoided, tenui, ienebroso-cornea, lievi; suturis valde iinpressis : 

 anfractibus instar quinis, convexis ; aperturd subrotundaiu, alba. 



Shell ventricoso-conical, thin, dark horn coloured, smooth ; sutures very much im- 

 pressed ; whorls about five, convex ; aperture nearly round, white. 



Hab. Hopeton, near Darien, Georgia. Professor Shepard. 



My Cabinet. 



Cabinet of Professor Shepard. 



Diam. -7, Length M inches. 



Remarks. — This species, in form, resembles most, perhaps, the P. 

 vivipara. It is not quite so large, nor has it bands. It is rather more 

 elevated, and the body whorl is smaller and rounder than the P. cledsa 

 (Say). The aperture at the base recedes more than is usual with this 

 genus. 



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