FUSING. 



F. LACUSICAUDATUS, Hinds. PL 38, fig. 161. 



Reddish brown ; aperture contracted by an inward curvature 

 of the lip. Length, 2-25 inches. 



L* Agulhas Bank, Gape of Good Hope. 



This is doubtless a monstrosity caused by some injury to the 

 mantle of the animal. I have seen a number of similar instances 

 of abnormal inflection in the lip in both marine and terrestrial 

 mollusks. 



F. KOBELTI, Dall. PL 39, fig. 162. 



Whorls 7 or 8, with rounded ribs crossed by revolving ridges, 

 alternately larger. The shell is white, under an ashy gray or 

 greenish olivaceous epidermis, the alternate larger revolving 

 ridges chocolate brown ; spire moderately long, whorls well 

 rounded ; canal rather short, somewhat curved. 



Length, 2 to 2*5 inches. 



Catalma Island and Monterey, Gal. 



As this species has not been figured hitherto, I give that of a 

 beach-worn specimen (the best I have) from Catalina I. The 

 shell has been confounded by some of the West Coast collectors 

 with F. ambustus, Old., but is a stouter species. 



F. TENUILIRATUS, Bunker. PL 30, fig. 103. 



Whitish, with light yellowish brown longitudinal strigations. 



Length, 3 inches. 



I If. ttf. liiiL-iioirn. 



The gradual inferior contraction of the aperture, until it merges 

 insensibly into the rather wide canal is the principal distinctive 

 feature of this stout but probably immature shell. 



F. RUBOLPHI, Bunker. PL 39, fig. 164. 



Yellowish white, the revolving striae light chestnut, crossed by 

 longitudinal strigations or maculations of the same color. 



Length, 3'5 inches. 



Hal), unknown. 



In the features of this species as Avell as in those of the follow- 

 ing one, may be recognized some of the characteristics of the 

 genus Hemifusus. 



