304 LAND AND FRESH-WATER SHELLS OF N. A. [pART IV. 



specimens is obscurely banded, while the other has well defined 

 bands, the broadest one being above. The aperture is about oue- 

 thii'd the lencrth of the shell. — Lea. 



205. G. rara, Lea. 



Melania rara. Lea, Proc. Acad. Nat. Sci., p. 121, 18G1. 



Goniobasis rara, LEA, Jour. Acad. Nat. Sci., v, pt. 3, p. 2-20, t. 34, f. 3, March, 1863. 

 Obs., ix, p. 42. 



Description. — Shell smooth, high conical, scalariform, rather thick, 

 dark olive, shining; spire raised; sutures irregularly impressed; 

 whorls eight, flattened, angular above ; aperture rather small, ellip- 

 tical, dark purple within ; outer lip sharp ; columella incurved, 

 Fig. 585. ^ y f > k- f^ ) 



purple, obtusely angular at the base. 

 Habitat. — Coosa River, Alabama; E. R. Showalter, M.D. 

 Diameter, -38; length, -90 of an inch. 



Observations. — A single specimen only of this species was 

 sent to me by Dr. Showalter. It is remarkable for its fine 

 polish, its dark color and its square shoulder below the sut- 

 ures. It has a few obscure strias on the lower part of the whorl. 

 The Babylouic form is unusual. It reminds one of varians, herein 

 described, but that species is plicate and not scalariform. The length 

 of the aperture is more than one-third the length of the shell. — Lea. 



May possibly be a monstrosity of G. fallax. 



206. G. punicea, Lea. 



Melanin imnicea, LEA, Proc. Acad. Nat. Sci., p. 119, 18C1. 



Goniobasis pjinicea, Lea, Jour. Acad. Nat. Sci., v, pt. 3, p. 232, t. 34, f. 27, March, 

 1803. Obs.,ix, p. 54. 



Description. — Shell smooth, somewhat cylindi'ical, thick, reddish 

 brown; spire elevated, conical; sutures impressed; whorls slightly 

 convex; aperture small, ovately rounded, white within; outer pig. 536. 

 lip acute ; columella thickened, white, rounded at the base. 



Habitat. — Coosa River, Alabama; E. R. Showalter, M.D. 



Diameter, -38 ; length, -94 of an inch. 



Observations. — All the five specimens before me are decol- 

 late, and have nearly the general outline of Bulimus decollatns, 

 Lam. Some have but two complete whorls, while one has four; 

 probably when complete the number would be seven. Two of the 

 specimens have slight stria) below, and one has a few obscure, capil- 



