NEW MELANID/E OF THE UNITED STATES. 325 



GONIOBASIS PROLETARIA. PL 38, fig. 177. 



Testa plicata, obtuse conoidea, subtenui, cornea, evittata ; spira, obtuse conica ; suturis impressis ; anfrac- 

 tibus instar senis; convexiuseulis, superne plicata ; apertura grandiuscula, subrhomboidea, intus 

 albida; labro aeuto, shraoso; columella, incurvsl, incrassatS, et contorts,. 



Shell folded, obtusely conical, rather thin, horn-color, without bands ; spire obtusely 

 conical; sutures impressed ; whorls about six, slightly convex, folded above ; aperture 

 somewhat large, subrhomboidal, whitish within ; outer lip acute, sinuous ; columella 

 bent in, thickened and twisted. 



Proc. Acad. Nat, Sci. 1862, p. 268. 



Hab. — Florence, Alabama River, Rev. "G. White. 



My cabinet and cabinet of Mr. White. 

 Diam. 31, Length -65 inch. 



Remarks. — A single specimen only was received, and that far from being perfect. 

 The epidermis of it is very thin and most of it removed. It is nearly of the size and 

 somewhat like paupercula herein described, but is more conical and has larger and 

 more distant folds, which are very slightly inclined to the left. The aperture is 

 more than one-third the length of the shell. 



',-> 



GONIOBASIS INCONSTANS. PI. 38, fi<J. 178. 



Testa plicata, subfusiformi, subtenui, cornea vel olivacea vel tenebroso-fusca, vittata vol evittata ; spira 

 obtuse conica; suturis impressis ; anfractibus senis, convexiuseulis, superne plicata ; apertura grandi- 

 uscula, subrhomboidea, intus albida vel dilute purpurea vel vittata; labro acuto, parum sinuoso; colu- 

 mella incurva, et contorta. 



Shell folded, subfusiform, rather thin, horn-color, olivaceous or dark brown, banded 

 or without bands ; spire obtusely conical ; sutures impressed ; whorls six, somewhat 

 convex, folded above ; aperture somewhat large, subrhomboidal, whitish within, 

 pale purple or banded; outer lip acute, slightly sinuous; columella bent in and 

 twisted. 



Proc. Acad. Nat. Sci., 1862. p. 269. 



Hab. — Etowah River, J, Postell. 



My cabinet and cabinets of Mr. Postell and Dr. Hartman. 

 Diam. -26, Length -60 inch. 



Remarks. — This is a small and very variable species, varying from light horn-color 



to dark brown, a few having two broad bands. The folds rarely reach to the body 



whorl, but they cover the upper whorls, and are somewhat distant and nearly straight. 



Some of the specimens closely resemble proletaria, herein described, in form, but this 



has a more pointed apex, and is more fusiform. The aperture is not quite one half 



the length of the shell. 



83 



