LIMNiEA. 



109 



28. LIMN^A GABBII, Tryon. 



Plate 18, fig. 7. 



Shell somewhat oval, with rather short, at- 

 tenuated spire, acute at apex; whorls uot 

 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 striiB. 



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) 



