132 SIPHO. 



S. BBEVICAUDA, Desh. 



KamtscJiatka. 



Not figured. Said to resemble S. lividus, Morch. 



In Sowerby's monograph of Fusus, just published in the 

 Thesaurus Conchyliorum, occur the following species, referable 

 to Sipho: 



S. RECTIPLICATUS, Sowb. PL 87, fig. 612. Northern Seas. 



This is a form of the very variable S. Kroyeri, Moller. 

 S. OBESUS, Sowb. PI. 87, fig, 624. Northern Seas. 



Nearly allied to S. glabra, Verkriizen, but more bulbous below. 

 Probably not distinct from that species. 



S. SOLIDULUS, Sowb. PI. 87, fig. 622. Northern Seas. 



= S. Stimpsom, Morch, Var., p. 126, t, 51, f. 313. 



Through the courtesy of Prof. Friele, who has forwarded to 

 me proof plates of his forthcoming work on the Mollusca of the 

 Norwegian Polar Expedition, I am enabled to illustrate the 

 following additional species : 



S. DANIELSENI, Friele. PL 87, fig. 610. 



Shell whitish. Length, 39 mill. 



Dredged between Norway and Greenland, at 1000 fathoms. 



Very closely related to S. lividus, Morch (t. 53, f. 321 ), and 

 S. Sarsii, Jeffreys (t. 52, f. 322, 323). I have not seen specimens 

 of this or the succeeding species. 



S. HANSENI, Friele. PL 87, fig. 628. 



Yellowish brown. Length, 61 mill. 



Spitzbergen. 



Only one example found. Resembles the variety of S. Stimp- 

 soni, which I have illustrated, PL 51, f. 313. 



S. VIRGATUS, Friele. PL 87, fig. 613. 



Reddish yellow. Length, 30 mill. 



Near Lofoten, Spitzbergen. 



In form and extraordinarily short canal, like S. Verkriizeni, 

 but sculpture and apex different. 



