NEW MELANIDiE OF THE UNITED STATES. 239 



Shell, striate, subglobose, thick, horn-color, robust ; spire obtusely conical ; sutures 

 impressed ; whorls six, very much inflated, the last large ; aperture rather large, 

 elongately elliptical, whitish within ; columella whitish, thickened, arcuate, retuse at 

 the base. 



Melania calcuhides, Proc. Acad. Nat. Sci., 1861, p. 118. 



Hob. — Coosa River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -50, Length -93 inch. 



Remarks. — Four specimens of different ages were received ; two are without bands 

 and two have four bands each. It is not so globose as orbicula, herein described, and 

 is much larger. It is also higher in the spire. It is nearest to Melania (Gonio- 

 basis) robusta (nobis), but is not so high in the spire. The two differ in the channel 

 at base of the columella. The aperture is a little more than half the length of the 

 shell. All these specimens are more or less striate, the upper ones being more 

 conspicuous. 



Goniobasis copiosa. PI. 34, fig. 39. 



Testa striata, late fusif'ormi, ventricosa., o' ituso-conica, crassiuscula, luteo-cornea, obsolete vittata; spira 

 valde obtusa, ; suturis irregulariter i^j ircssis ; anfraetibus quinis, convexiusculis, ultimo pergrandi ; 

 apertura copiosa, late ellipticS, intus a ] bida ; labro aj3uto, sinuoso ; columella areuata, superne pau- 

 lisper incrassata, ad basim subrotumf, 1 . 



Shell smooth, broadly fusiform, ventricose, obtusely conical, somewhat thick, yel- 

 lowish horn-color, obscurely banded; spire very obtuse; sutures irregularly im- 

 pressed ; whorls five, somewhat convex, the last very large ; aperture very large, 

 widely elliptical, whitish within ; outer lip acute,, sinuous ; columella arcuate, 

 slightly thickened above, rounded at the base. 



Melania copiosa, Proc. Acad. Nat. Sci., 1861, p. 122. 



Rob. — Coosa River, Alabama. E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -42, Length -69 inch. 



Remarks. — The single specimen before me seems to be mature. It is allied to 

 Melania ( Goniobasis) ovalis (nobis) and to culta, herein described. It is more inflated 

 than either, and has a more expanded outer lip. In this specimen the upper whorls 

 have a single well-defined band, which is obsolete on the lowest whorl. It has ten 

 rather coarse rounded striaa, which are slightly interrupted by the lines of growth, 

 giving the surface a rugose appearance. These stria? being thickened, cause in the 

 interior whitish lines. The aperture is more than one-half the length of the shell. 

 The apicial whorls are plicate. 



Goniobasis lita. PI. 34. fig. 40. 



Testa rugoso-striata, subi'usiformi, conoidea, subcrassa, quatirivittata, variegata, nitida ; spira obtuse 



