BUOCINOFUSUS. 71 



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

 about half way up the tentacles; foot lanceolate, thick, rounded 

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

 what truncated. 



B, BERNICIENSIS, King, PI. 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 690 fathoms. Jeffreys cites varie- 

 ties elegans, tener and inftata. He says that " the young, when 

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

 full-grown specimens (especially 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 ventricosus. 



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



Yellowish brown, columella tinged pallid rosaceous. Labrum 



effused. Length. 2' 25 inches. 



Spitsbergen. 



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 Spitzbergensis, 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 will 

 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. 



