244 HELICID^. 



cles, lighter on the sides and base ; foot very narrow, 

 threadlike. 



Shell minute, sub-conical, thin, pellucid ; epidermis 

 smooth, shining, amber-colored ; whorls five or sis, 

 rounded ; suture distinct and deep ; aperture trans- 

 verse, narrow ; lip simple, acute ; base convex ; umbilical 

 region mdented, umbihcus closed. 



Transverse diameter one-tenth of an inch. 



Geographical Distribution. Inhabits the sea-islands 

 of Georgia, the hill-sides of Vermont, the North-western 

 Ten-itory, and the shores of Fresh Pond, near Boston. 

 It is also met with from Ohio to Texas. 



Remarks. The above-named localities prove this to 

 be a widely-spread species. Its diminutive size has pro- 

 bably prevented its being observed in other places. It 

 offers but few varieties, and is easily distinguished by its 

 conical form, and thin, amber-colored, transparent shell. 

 It is a very beautiful and delicate little species. The 

 spire is elevated, turreted, attaining even seven full 

 volutions, with an obtuse apex ; at other times it is 

 much lower, with a somewhat pointed apex, and not 

 exceeding five volutions. In the latter case, the base is 

 of course much broader in proportion to the height, and 

 the outer whorl is obtusely carinated. The plane of the 

 base is so nearly horizontal, that the shell, when set upon 

 its base, is upright. It is so transparent, that a portion 

 of the sutures of the spire are visible through the sub- 

 stance of the shell, when viewed on the base. 



