118 IIELICEA. 



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). 



HELIX TENUISTRIATA Binsey. 



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. 



H. testa depressa, carinata, umbilicata, albido-cornea ; anfractlbus 

 septem, oblique striatis ; apertura angusta, depressa ; labro sub-reflexo ; 

 basi convexo ; umbilico aperto. 



SYNONYMS AND REFERENCES. 



Helix tenuistriata Binney, Boston Journal, 1842, iv. i. cover, p. 3. 



Pfeiffer, Mou. Hel. Viv. i. 432. 

 Helix vortex Gould, (non Pfeiffer,) 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 widtii very 

 gradually from the apex to the aperture ; striated with fine, pi'omi- 

 nent, distinctly separated, curved lines ; aperture 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. 

 Haldeman. 



Remarks. This pi'etty 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 



