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



with close, perpendicular ribs and four, dark brown, revolving bands, 

 which give the shell a dark appearance, although the ground is 

 yellow. The two middle bands are approximate, and the lowest band 

 is the strongest. Immediately below the suture there is usually a 

 light line. It belongs to the group of which Melania (Gouiobasis) 

 Deshayesiana (nobis) may be considered the type, but is nearest 

 allied to iiiclinans, herein described. It is nearly of the same size 

 and outline, but the regular perpendicular folds and the distinct bands 

 distinguish it at once. The apical whorls are disposed to be carinate. 

 The aperture is one-third the length of the shell. The specimens 

 were all incrusted with black oxide of iron, which, being removed, 

 the epidermis was found to be smooth and polished. One or two i-e- 

 volving striae immediately under the suture decussate the folds. — Lea. 



62. G. inconstans, Lea. 



Goniobasis inconstans, Lea, Proc. Acad. Nat. Sci., p. 2G9, 1SG2. Jour. Acad. Nat. 

 Sci., V, pt. 3, p. 325, t. 38, f. 178, Mar., 1863. Obs.. ix. p. 147. 



Description. — Shell folded, subfusiform, rather thin, horn-color, 

 olivaceous or dark brown, banded or without bands ; spire obtusely 



conical; sutures impressed; whorls six, somewhat convex, 

 Fig. 368. 



folded above ; aperture somewhat large, subrhomboidal, whit- 

 ish within, pale purple or banded; outer lip acute, slightly 

 sinuous ; columella bent in and twisted. 

 Habitat. — Etowah Eiver; J. Postell. 

 Diameter, -20 ; length, -GO of an inch. 

 Observations. — 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. — Lea. 



03. G. continens, Lea. 



Goniobasis continens, Lea, Proc. Acad. Nat. Sci., j). 208, 1802. Jour. Acad. Nat. 



Sci., pt. 3, p. 32t, t. 38, f. 17u, March, ISjJ. Obs., ix, p. Hii. 

 Goniobasis itrnUtaria, LEA, Proc. Acad. Nat. S;-.i., p. 2(iS, 1832. Jour. Acad. Sci., 



V, pt. 3, p. 325, t. 38, f. 177, March, 1833. Obs., ix, p. 147. 



Description. — Shell folded, conical, rather thin, yellowish horn- 



