130 ■ NEW UNIONID^, MELANIDiE, ETC., 



Remarlis. — About two dozen of tliis species were sent to me by Mr. Wbite. They 

 differ in length and carination, some of the specimens being nearly as high in the 

 spire as Melania (Goniobasis) iiallescens (nobis,) which the species resembles much in 

 many respects. Other specimens .are obtuse in the sjjire, and approach to Melania 

 (Goniobasis) rJiombica Anth., but that shell is smaller, and has a greenish epidermis. 

 The surface of the above described species is usually smooth, but sometimes it has the 

 small veins which generally are found on i^cdhscens. The aperture is rather more 

 than one-third of the length of the shell. 



Goniobasis pupa:FORMis. PI. 23, fig. 31. 



Testa Isevi, pupreformi, crassluscula, tenebroso-mellea, obsolete quinque vittata; spiraobtusa; suturis im- 

 pressis ; inferne tumidis ; anfractibus instar senis, convexiusculis ; apertura subgrandi, elongato- 

 pyriformi, intus vittata ; labro acute, recto; columella superne incrassata. 



Shell smooth, pupaeform, somewhat thick, dark honey yellow, obscurely five-banded ; 

 spire obtuse ; sutures impressed and swollen below ; whorls about six, slightly convex ; 

 aperture somewhat large, elongately pear-shaped and banded within ; outer lip acute 

 and straight; columella thickened above. 



Operculum ovate, dark brown, with the polar point well removed from the left 



side. 



Proc. Acad. Nat. Sei., 1864, p. 112. 



]Jah. — Coosa Kiver, Alabama, E. E. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -36, Length -80 inch. 



Remarhs. — A single specimen only of this species was received from Dr. Showalter, 

 and the apex of this is not quite perfect. It is allied to Melania (Goniobasis) impoidea 

 Anth., and at first I thought it belonged to that species. In getting typical speci- 

 mens of that species, I find it, however, to differ in outline, color, size, and the num- 

 ber of bands, _pi«2JoifZea having but four. It is also allied to Alahamensis (nobis,) but 

 differs in having a larger body whorl, a less constricted aperture, and in having one 

 more band, as well as in having a less natural polish. The aperture is nearly one- 

 half the len<ith of the shell. 



^c 



Goniobasis pulla. PL 23, fig. 32. 



Testa lasvi, exserta, subtenui, tenebroso-fusca, nitida ; spira elevata; suturis regulariter iinpressis; anfrac- 

 tibus instar septenis, curvatis ; apertura parviuscula, ovato-rbomboidea, intus dilute purpurea ; labro 

 acuto, subsinuato ; columella tenui, purpurascenti, aliquanto contorta. 



Shell smooth, exserted, rather thin, dark brown, bright ; spire raised ; suturis regu- 

 larly impressed ; whorls about seven, curved ; aperture rather small, ovately rhomb- 



