304 NEW MELANIDiE OF THE UNITED STATES. 



towards the margin and slightly thickened; columella bent in and very much 



twisted. 



Proc. Acad. Nat. Sci., 1862, p. 264. 



Hab. — Tennessee, J. G. Anthony. 



My cabinet and cabinet of Mr. Anthony. 

 Diam. -33, Length -77 inch. 



Remarks.— A single specimen of this species was sent to me some years since by 

 Mr. Anthony, who collected it in Tennessee, but I am not aware in what part. I 

 then thought it might be a variety of Melania {Goniobasis) per/usca (nobis), but it is 

 a smaller species with a longer aperture. It has the smooth, dark chestnut brown 

 and polished epidermis of Melania {Goniobasis) nitens (nobis), but is larger and has a 

 longer aperture. In the specimen before me there is a line of light brown below the 

 suture. On the inside there are two obscure brownish bands, but none are apparent 

 on the outside. The aperture is nearly half the length of the shell. I name this after 

 Mr. J. G. Anthony, who kindly sent it to me with other specimens. . 



Goniobasis Gabbiana. PI. 37, fig. 141. 



Testa lcevi, subfusiformi, subtenui, cornea, evittata ; spira parum exserta, rnucrouata ; suturis impres- 

 sis ; aufractibus instar octonis, convexis, varicosis ; apertura parviuscula, subrliomboidea, intiis albida ; 

 labro acuto, parum sinuoso ; columella incurva et contorta. 



Shell smooth, subfusifbrm, rather thin, horn-color, without bands ; spire slightly 

 elevated, sharp-pointed ; sutures impressed ; whorls about eight, convex and varicose ; 

 aperture rather small, subrhomboidal, whitish within ; outer lip acute, slightly sinu- 

 ous ; columella bent in and twisted. 



Proc. Acad. Nat. Sci., 1862, p. 265. 

 jjab. — Tennessee, Prof. G. Troost ; Alabama, Prof. Tuomey. 

 My cabinet and cabinet of Dr. Hartman. 

 Diam. -25, Length -54 inch. 



Remarks. — I have only seen two specimens and indeed I have some doubts if that 

 from Alabama be not specifically distinct. That from the late Prof. Troost I con- 

 sider the type. It has been in my possession many years. They are very much the 

 same in outline and size, and both have veiny lines on the body whorl. That 

 from Alabama is, however, slightly more inflated, is of a darker color, and has plicae on 

 the apicial whorls with strige beneath. It also has a less number of whorls by two. 

 When more specimens shall be found from both habitats, and these differences be 

 found to be persistent, I would consider them as distinct species. The aperture is 

 about onedialf the length of the shell. I name this after my young friend, Mr. W. M. 

 Gabb, who has done much to advance the conchology of our country. 



