LIMN^A. 



93 



Oregon. It also inhabits Siberia and every 

 part of Europe. I figure a specimen from 

 Iowa, which much exceeds the dimensions of 

 Haldeman's figures. 



7. LIMN^A LEPIDA, Gould. 



Plate 16, figs. 12, 13. 



Shell very fragile, elongated, very acutely 

 conical, subumbilicate, pale horn-color ; whorls 

 five, oblique, moderately convex, forming an 

 acuminated spire ; suture moderately im- 

 pressed ; surface smooth and shining, lines of 

 growth faint. Aperture large and expanded, 

 nearly semicircular, half the length of the 

 shell ; outer lip expanded ; columella having 

 a very strongly marked sharp fold, and broadly 

 covered with a thin callus, which, not being 

 closely appressed at the umbilical region, 

 leaves a small chink. 



Length 15, diam. 6 mill. 



Lake Vancouver, Oregon. 



I have not seen this species, which in 

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