164 



Family lanthinidce. 



Ianthina fragilis, Lamarck. 



" Only a fragment found at Sable Island to identify by ; probably a drift 

 shell " (Willis). According to Verrill, /. fragilis has been " found cast 

 ashore at Nantucket, but probably does not occur living so far north. It 

 inhabits the Gulf Stream farther south."* 



T.ENIOGLOSSA. 



Family Naticidoe. 

 Amaura CANDIDA, Moller. 



1842. Index MoUuscorum Grrenlandise, p. 7. 



One living specimen of this shell was dredged hy the writer in 1869, off 

 Grande Greve, Gaspe Bay, in from about 20 or 30 to 50 fathoms. 



Amauropsis Islandica (Gmeiin). 



Nerita Islandica, Gmeiin (1792). 



Natica helkoides, Johnston (1835). 



Natica canaliculata, (xould (1840). 



Natica cornea, Moller (1842). 



Amauropsis hcUcoides, Stinipson (1862). 



Amauropsis Islandica (Gmeiin) G. 0. Sars (1878). 



Sable Island, fishing banks (Willis) ; Marsouin (Dr. R. Bell). Very rare 

 in good condition. 



Specimens from the Pleistocene deposits at Montreal that were at first 

 identified with this species, are the types of the since described Choristes 

 elegans, Carpenter. 



Acrybia flava (Gould). 



Natica J{ara,[Goi\ld (1840). 

 Natica Smiihii, Brown (1844). 

 Bulbus flavus, Stimpson (1862). 



Grand Manan, "taken in 50 fathoms, mud, some miles off the Swallow's 

 Tail" (Stimpson) ;^Sable Island and fishing banks off Halifax (Willis). 

 Rimouski, Les^- Islets and Claude (Bell). Also rare, in good condition. 



* U.S. Fish Commission, Report for J 871-72 (1873), p. 660. 



