96 LIMNZA. 
Length 25, diam. 10 mill. 
Hab.—California and Oregon. 
This shell resembles LZ. attenuata and L. 
refleea more than any others. The first is 
much narrower, and the whorls are not so 
convex, while the latter is more elongated, 
more convex, and the aperture is narrower 
and turned back. 
12. LIMNAA PROXIMA, Lea. 
Plate 17, fig. 2. 
L. Traskii, Tryon. | Plate 17, fig. 3. 
Shell acutely conic, rather thin, closely and 
irregularly striated, horn-colored, minutely 
perforated ; spire subelevated, sharpened at 
the apex; sutures deeply impressed; whorls 
seven, convex, rapidly enlarging; aperture 
subinflated, subelliptical, banded within, 
columella slightly plicate. 
Length 23, diam. 11 mill. 
California. 
L. Trasktii was described from a solitary 
(70) 
