BUCriNOFUSUS. 71 



bluntly pointed tips ; eyes small and black, seated on long stalks, 

 about half wa}^ up the tentacles ; foot lanceolate, thick, rounded 

 and double-edged in front ; tail either pointed or blunt and some- 

 what truncated. 



B, Berniciensis, King. PL 40, figs. 183, 184. 



Whorls encircled with alternately larger and smaller revolving 

 ridges, decussated by fine growth-lines ; lip margin slightly 

 everted ; shell thin, white, under a very thin, light olive epider- 

 mis. Length, 3 inches. 



North Sea; French Coast, occasionally; Gircumpolar ? 



Dredged in fine sand 78 to (i90 fathoms. Jeffreys cites varie- 

 ties elegans, tener and inflata. He says that "the young, Avhen 

 fresh-caught and living, look like tiny rosebuds." The color of 

 full-groAvn specimens (esi)ecially of the inside) is not less beauti- 

 ful ; these may vie with 



.... "The dappled shells 

 That drink the wave with such a rosy mouth." 



Middendorff, Adams and Kobelt think that F. Sabinii, Gray, 

 is the young of this species ; if so, that name would have priority ; 

 but the species is unfigured. and doubtful. Jeffreys refers it 

 doubtfully to Sipho ventyncosus. 



B. TEREBRALis, Gould. PI. 39, fig. 189. 



Yellowish brown, columella tinged pallid rosaceous. Labrum 



effused. Length, 2*25 inches. 



Spitzbergen. 



If not identical with the preceding species, it is very closely 

 allied to it. Gould's type had a broken lip, but he refers besides 

 to a perfect specimen in the Cumingian Collection ; this after- 

 wards became the type of Fusus SpitzhergenHis, Reeve. 



Sub-Family PTYCHATRACTIN.E. 



This group was distinguished as a family by Stimpson. The 

 shell of Ptychatractus unites the form of a Sipho with the folds 

 of a Fasciolaria ; its small size, color, and northern habitat Avill 

 distinguish it from the latter, even without taking into account 

 the very diverse dentition ; yet without the latter difference it 

 would scarcely have been advisable to have separated the single 

 species upon which the genus was founded from Fasciolaria. 



