118 Binney on Terrestrial Mollusks. 



The species is found also in Haiti, St. Thomas, Porto 

 Rico, Bermuda, and Cuba; and in Georgia, (Gould). 



I very much doubt the identity of tenuistriata with this 

 species. (See remarks in the following article). 



HEI.IX TENUISTRIATA Bix.nky. 



The following description I found among my father's 

 papers. It is impossible to apply it to any known Ameri- 

 can species. It will, however, probably be rediscovered at 

 some future time. Its habitat, size, and all its character- 

 istics, are opposed to the theory of its identity with the 

 preceeding species, as suggested by Gould. 



II. testa (leprcssa, carinata, umbilicata, albiilo-cornea ; anfractlbus 

 septem, obli(|ue striatis ; ajiertura angusta, dcjiressa ; labro sub-retiexo ; 

 basi convexo ; umbilico aperto. 



SYNONYMS AND KEFEKENCES. 



HeUx tenuistnata Binney, Boston .lournal, 1842, iv. i. cover, p. 3. 



Pfeiffek, Mon. Hel. Viv. i. 432. 

 Hdix vortex Gould, (non Pfeiffek,) Terr. Moll. iii. 34. 



DESCRIPTION. 



Animal not hitherto noticed. 



Shell flattened, the upper surface acutely carinated ; epidermis 

 light horn-color ; whorls seven, narrow, increasing in width very 

 gradually from the apex to the aperture ; striated with fine, promi- 

 nent, distinctly separated, curved lines ; apertui-e angular, depressed, 

 contracted ; lip above the carina acute, below a little reflected ; 

 base sub-convex, smooth ; umbilicus open, moderate in size, exhib- 

 iting two or three volutions. 



Greatest transverse diameter about half an inch. 



Geographical Distribution. Found hitherto only in the eastern 

 part of Tennessee, whence a single specimen was brought by Mr. 

 Ilalderaan. 



Remarks. Tiiis pretty species is described with some reluctance 

 from a ' single specimen, as it may be considered doubtful until 

 another be found, whether it may not be a foreign shell introduced 

 by mistake among Tennessean shells. It is quite flat on the upper 



