NEW MELANIDiE OF THE UNITED STATES. 237 



distinguished from the former by being more cylindrical, being of a slightly lighter 

 brown, and in having more striae. From the latter by having a less exserted spire, 

 by having finer strise and being of a darker brown. All three of these species have 

 usually more or less finer brown bands in the interior, but occasionally a specimen 

 may be seen without bands. Among the specimens before me, the crebristriata has 

 about 15 striae, the capillaris about 26, and the impressa about 28. These raised 

 rounded strire cause, in all the three species, a beautiful crenated outer lip. The 

 aperture is about half the length of the shell, and the apex is usually decollate. 

 The brown lines of the interior do not reach the edge of the outer lip. In some spe- 

 cimens the columella is so much thickened that it reminds one of the genus Lithasia. 



GoNIOBASIS BELLULA. PI. 34, fig. 35. 



Testa striata, subfusiformi, crassiuscula, luteo-cornea, quadrivittata ; spira obtusa ; suturis valde impvessis ; 

 anfraetibus instar quinis, convexiusculis, ultimo grandi ; apertura subgrandi, elliptica, intus albida et 

 vittata ; labro aeuto ; columella alba, inflecta, ad basim obtuse angulata. 

 Shell striate, subfusiform, somewhat thick, pale horn-color, four-banded; spire 

 obtuse; sutures much impressed ; whorls about five, somewhat convex, the last large ; 

 aperture rather large, elliptical, whitish within and spotted; outer lip sharp; colu- 

 mella white, inflected, obtusely angular at the base. 



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

 about one-fourth from the base. 



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



/Zo&.—Yellowleaf Creek, Shelby County, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -43, Length -78 inch. 



Remarks. — The four bands which are well marked on the three specimens before, 

 seem to be regular and prominent in character. The two middle ones are slightly- 

 nearer together than they are to the outside ones. These bands are strongly marked 

 inside and out. The transverse strire are few, coarse and cord-like. Neither of 

 the specimens are perfect in the apex, and therefore the number of whorls cannot be 

 correctly ascertained. The bands are exhibited on all the whorls. The aperture is 

 nearly the length of the shell. This is a remarkably beautiful species, the deep brown 

 bands forming a contrast to the bright yellowish horn-color of the ground. In outline 

 and general appearance it is closely allied to Slioioalterii, herein described, but it is 

 more inflated and has a regularly formed spiral operculum, while the Showalteru 

 is long tongue-shaped. 



Goniobasis culta. PI. 34, fig. 36. 



Testa rugoso- striata, subfusiformi, inflata, subcrassa, viridi-lutea, nitida, trivittata ; spira valde obtusa ; 

 suturis valde" et irregulariter impressis; anfraetibus septenis, superne carinatis; apertura ampla, 

 subrhomboidea, intus albida et vittata ; labro acuto ; columella incurya, dilute rosea, iuferne angulata. 



. 01 



