HELIX. 79 



T/irlto paludosns, Dorset Catalog, p. o'2, pi. ir),f. 2.5. — Turt. Conch. Diction, p. •2"2!i. 



Cliilostoma piilchfillnm, FiTZiNG Syst. V'erz. Erzh. Weichth. p. .08. 



Corneola pulchella, Held, Isis, 1 837, p. 9 12. — Walker, Testacea minuta rariora, 



f. 23. 

 Circinaria pidcheUa, Beck, Index Moll. Mus. Christ. Frid. p. 23. 



Shell minute, suborbicular, rather depressed, tolerably 

 strong for its size, not very transparent, white or corneous 

 white, not variegated or banded, either smooth or with 

 longitudinal membranaceous costella. Spire scarcely at all 

 raised ; apex blunt. Whorls three and a half, moderately 

 convex, profoundly defined through their rather abrupt 

 inflection at the suture, not particularly narrow, for the 

 most part gradually enlarging, but rather abruptly di- 

 lated at the termination of the last whorl, which is well 

 rounded at its circumference, not distinctly or only slightly 

 deflected. Aperture almost circular, as high as it is broad, 

 margined by a broad and flattened solid opaque white 

 peristome, which is expanded above and reflected below ; 

 lips contiguous, not free all round, but connected on the 

 columella by a layer of white shelly matter. Base rounded ; 

 umbilicus large, exposing the upper volutions. 



Diameter the ninth of an inch. With every disposition 

 to defer to the authority of the illustrious Pfeifi'er, whose 

 knowledge of the Helices is most comprehensive, we are 

 unable to discern any permanent characters by which 

 the ribbed variety may be distinguished from the smooth 

 one, so as to maintain its position as a distinct species, in 

 which light it has been regarded by Miiller and others. 



The animal is milky white. 



It lives under stones, on walls, and on the ground, often 

 in dampish places. It is very generally diffused through- 

 out the British Isles. Both varieties inhabit wet and dry 

 localities indifferently. 



