fi-i FUSING. 



F. LACusiCAUDATus, Hiiuls. PL 08, fig. 1(U. 



Reddish bi-own; aperture contracted by an inward curvature 

 of the lip. Length, 2-25 inches. 



U AiiulhdS Bank; Cape of Good Hope. 



This is doubtless a nionstrosit}" caused by some injury to the 

 mantU^ 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. ri. ;j',), fig. 1(;2. 



Whorls 'I or 8, with rounded ribs crossed by revolving ridges, 



alternately larger. The shell is Avhite, 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. 



Catalina Island and Monterey, Oal. 



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. ambustas, Gld,. but is a stouter species. 



F. TENUILIRATUS, Duuker, PI. 30, fig. 1():>. 



Whitish, with light j'ellowish brown longitudinal strigations. 



Length, 3 inches. 



Hah. unknown. 



The gradual inferior contraction of the aperture, luitil it merges 

 insensibly into the rather wide canal is the principal distinctive 

 feature of this stout but probably immature shell. 



F. Rlm)0Lphi, Dunker. PI. 39, lig. 1(;4. 



Yellowish Avhite, tlu; revolving striae light chestnut, crossed by 

 longitudinal strigations or maculations of the same color. 



Length, 3*5 inches. 



riah. urtknown. 



In tlie features of this species as well as in those of the follow- 

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

 genus Hemifusus. 



