HELIX.— Plate CXVIII. 



lunar ; lip broadly expanded, white, callous within, 

 columellar margfin short, subvertical, dilated, re- 

 flected, almost concealing tlu' narrow umbilicus, 

 basal margin rather drawn out. 



Lea, Observations, vol. ii. p. 89. pi. 23. f. 7."). 



Ilab. Fort Vancouver, California, Nootka Sound. 



Distinguished by its covering of numerous short l)ristles, 

 which are arranged obliquely in a direction contrary to the 

 lines of growth. 



Species 693. (Mas. Cuming.) 



Helix ligeua. Hel. iesld umiilicatd, ort/kulalu-cunvvxd, 

 nilidd, pallide luted, superni arcuatim costulato-stri- 

 atd, 6asi kevigatd ; anfractUius sex, convexk, ultimo 

 basi planiore ; aperlurd lunari; pemtomate wnplici, 

 acuta, recto, margine colunullari vix rejtexiusculo, intu-i 

 mbincrasmtu. 



The tied Helix. Shell umbilicated, orbicularly convex. 



shining, pale yellow, arcuately rib-like striated ai the 

 upper part, smooth at the base; whorls si.x, convex, 

 the last llatter at the base ; aperture lunar ; lip sim- 

 ple, sharp, straight, columellar margin scarcely re- 

 flected, slightly thickened within. 



Sav, Jouni. Acad. Nat. Sci. I'hihidelphia, vol. ii. p. 157. 

 UelLc ff^ardiaiia, Lea. 

 Helix Rafmesquea, Ferussac. 



IJab. Missouri, Kentucky, Cincinnati, North America. 



The chief peculiarity of this species, compared with 

 other forms of the same type, is that there is no callous 

 reflected thickening of the lip. 



Fig. 694. (Mus. Cuming.) 



This species proves to be //. claiua. Say (not of Kafi- 

 nesque), wluch is a variety of //. Feiiiisylcaiiica, represt-nteil 

 in PI. CXVIl. 



