NEW MELANIDiE OF THE UNITED STATES. 225 



Hab — Coosa River, at Wetumpka and Montevallo, Bibb County, Alabama. 

 E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -40, Len S th ' 76 inch - 



Bernards.— Six specimens are before me. Two of them are mature, are yellowish 

 and are somewhat thick. Four are thinner and are purplish inside and out, not dis- 

 posed to be banded, but are obscurely maculate. The apicial whorls have obscure 

 folds. One of the old ones has obscure bands on the inside. The other has none. 

 The aperture is more than half the length of the shell. It is somewhat like 

 Mclania fuliginosa (nobis) in outline, but it is not so much inflated as that species. 



GONIOBASIS PURPUREA. PL 34, fig. 12. 



Testa lsevi, subfusifornii, obtuso-conica, subtenui, tenebroso-rufa ; suturis paulisper impressisj spira, 



valde obtusa ; anfraetibus quinis, ultimo grandi ; apertura subgrandi, elliptica. intus tenebrosa ; 



labro acuto ; columella tenebrosa, inflecta. 



Shell smooth, subfusiform, obtusely conical, rather thin, dark brown ; spire very 



obtuse ; sutures slightly impressed ; whorls five, the last large ; aperture rather 



large, elliptical, dark within; outer lip acute; columella dark and bent inward. 



Operculum ovate, spiral, dark brown, with polar point near the inner edge, and 

 one-fourth distance from the base. 



Mclania purpurea, Proc. Acad. Nat. Sci., 1861, p. 120. 



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



My cabinet and cabinets of Dr. Spillman and Dr. Hartman. 

 Diam. -35, Length -81 inch. 



Remarks. — There are two specimens before me of this very dark brown shell. The 

 larger one has three bands faintly visible on the inside. It is very possible that it 

 may be found much less intense in color. It is a graceful well proportioned species. 

 On the upper portion of the whorls, immediately under the suture, there is a disposi- 

 tion to take on a light color, like a thread. The aperture is about one half the length 

 of the shell. The nearest allied species is ebenum (nobis) =Melania iostoma, Anth., 

 but it may at once be distinguished by the line of the outer lip, which in ebenum is 

 remarkably indented, while in purpurea that line is nearly straight. Ebenum is also 

 smaller and thicker. 



GONIOBASIS ELLIPTICA. ■ PL 34, fig. 13. 



Testa lsevi, elliptica, luteola, quadrivittata ; spira brevi, obtusa, ad apicem plieata ; suturis impressis ; 

 anfraetibus senis, subconvexis ; apertura subgrandi, elongato-elliptica. intus quadrivittata. ad 

 basini obtuse angulata ; labro acuto ; columella albida et incurvata. 



Shell smooth, elliptical, yellowish, four-banded ; spire short, obtuse, folded at the 

 tip; sutures impressed; whorls six, subconvex; aperture rather large, elongate 



58 



