LIMNZA. 109 
28. LIMN ZA GABBII, Tryon. 
Plate 18, fig. 7. 
Shell somewhat oval, with rather short, at- 
tenuated spire, acute at apex; whorls not 
much rounded; suture well impressed; body 
whorl proportionally large, but not inflated ; 
aperture moderate, semi-oval, a little oblique ; 
columella oblique, narrow, scarcely folded, 
appressed, covering the umbilicus; surface 
covered with very close, fine striz. 
Length 13, diam. 7 mill. 
Clear Lake, California. 
This shell very closely resembles L. catasco- 
pium, Say, but differs in several particulars ; 
the spire is narrower and more attenuate, the 
body whorl is not so much inflated, the lines 
of growth are much closer and finer, the colu- 
mella is different, and the aperture is narrow 
below instead of being somewhat broadly 
rounded, as in catascopium. All the specimens 
received were of the same size as the one 
figured. 
(83) 
