LIMNAA. 93 
Oregon. It also inhabits Siberia and every 
part of Europe. I figure a specimen from 
Towa, which much exceeds the dimensions of 
Haldeman’s figures. 
7. LIMN ZA 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 
(67) 
