154 BULLETIN OF THE BUREAU OF FISHERIES. 



Predominantly southern (22). 



Tornatina canaliculata (chart 162). .Portland, Me., to Haiti. 



Cylichnella oryza (chart 163) Cape Cod to Charleston, S. C. 



Busycon canaliculatum (chart 164). .Beverly, Mass., to Gulf of Mexico. 



Busycon carica (chart 165) Cape Cod to St. Thomas, West Indies. 



Tritia trivittata (chart 167) Nova Scotia to St. Augustine, Fla. 



Ilyanassa obsoleta (chart 168) Nova Scotia to Tampa, Fla. 



Anachis avara (chart 169) Casco Bay to Florida Keys. 



Astyris lunata (chart 170) Cape Ann to Brazil. 



Eupleura caudata (chart 171) Cape Cod to West Indies. 



Urosalpinx cinereus (chart 172). . .Prince Edward Island to St. Augustine, Fla. 



Eulima conoidea (chart 173) Hatteras to West Indies. (Woods Hole region.) 



Seila terebralis (chart 175) Massachusetts Bay to Haiti. 



Cerithiopsis emersonii (chart 176). . .Cape Cod to Grenada, West Indies. 



Bittium alternatum (chart 177) Prince Edward Island to Louisiana. 



Caecum cooperi (chart 178) Cape Cod to Jamaica. 



Vermicularia spirata (chart 179) .. . .New England to Bahia, Brazil. 

 Crucibulum striatum (chart 182). . .Nova Scotia to Florida Keys. 



Crepidula fornicata (chart 183) Prince Edward Island to New Granada. 



Crepidula convexa (chart 184) Nova Scotia to Florida; (Texas?). 



Crepidula plana (chart 185) Prince Edward Island to Bahia, Brazil. 



Natica pusilla Eastport, Me., to Florida. 



Polynices duplicata (chart 186). . . .Massachusetts Bay to Mexico. 



Of approximately equal range, north and south. 



Littorina litorea (chart 180) Nova Scotia to Cape May, N. J. 



Of doubtful position. 

 Lacuna puteola (chart 181) Woods Hole region; Stonington, Conn.; England. 



The following is a list of species which were recorded with relative infrequency (at 

 less than 10 stations) during the dredging: 



Cylichna alba. 

 Haminea solitaria. 

 Cratena pilata. 

 Coryphella mananensis. 

 Coryphella salmonacea. 

 Doto coronata. 

 Mangilia cerina. 

 Drillia sp. 



Chrysodomus decemcostatus. 

 Tritonofusus islandicus. 

 Tritonofusus stimpsoni. 

 Arcularia vibex. 

 Thais lapillus. 

 Boreoscala groenlandica. 

 Epitonium multistriatum. 

 Epitonium dallianum. 

 Epitonium lineatum. 

 Stilifer stimpsoni. 

 Turbonilla nivea. 

 Turbonilla vineae. 



Turbonilla elegantula. 



Turbonilla areolata. 



Turbonilla interrupta. 



Turbonilla winkleyi (this and probably several 



others were taken at more than 10 stations). 

 Turbonilla rathbuni. 

 Odostomia seminuda. 

 Odostomia trifida. 

 Triforis nigrbcinctus. 

 Caecum pulchellum. 

 Littorina rudis. 

 Lacuna vincta. 

 Rissoa arenaria. 

 Cingula minuta. 

 Polynices immaculata. 

 Velutina laevigata. 

 Velutina zonata. 

 Acmaea testudinalis. 

 Margarites obscurus. 



