128 SIPHO. 



which he has not seen. It is possible that the two are identical, 

 and that limdus should be expunged from the genus Sipho. It 

 must be considered a very doubtful species ; I am not aware of 

 anything like the figure in the American Seas, and cannot help 

 thinking that the illustration is a bad one. 



S. SARSII, Jeffreys. PL 52, figs. 322, 323. 



Spirally costulate, clathrate by narrow, undulated growth-lines. 

 White, epidermis pallid olivaceous. Length, 54 mill. 



Southern Norwegian Coast ; 106 fathoms. 



Outline somewhat like that of the next species, but the spire is 

 more elevated and the whorls rounder ; sutures, consequently, 

 deeper. 



S. VENTRICOSUS, Gray. PL 52, fig. 324. 



Shell rather thin, inflated, spire short ; epidermis light olive. 



Length, l'5-2 inches.* 



Banks of Newfoundland . 



Fusus striatus, Reeve, is supposed by Kobelt to =this species, 

 but I think it more closely allied to F. Stimpso-ni, Morch. 



S. LACHESIS, Morch. PI, 51, fig. 312. 



Pinkish white under a coriaceous epidermis. Length, 41 mill. 



Greenland ; Finmark. 



S. VERKRUZENI, Kobelt. PL 52, fig. 325. 



Shell solid, nearly smooth ; canal very short ; columella strongly 

 callous below. Epidermis smooth, greenish yellow. 



Length, 2 inches. 



Northern Norway. 



Totally different from all the other species in its Bullia-like 

 aspect, want of striae and short canal. The radula and operculum 

 are those of Sipho, otherwise its generic position would be very 

 doubtful. Kobelt suspects that Chemnitz had this shell before 

 him when he assigned Norway as a habitat for Bullia, polita. 



S. ROSEUS, Ball. PL 52, fig. 329. 



Shell sniaU, of a rosy color when fresh, smooth to the touch, 

 elegantly proportioned. Whorls six, well-rounded but not in- 

 flated ; suture distinct ; apex not mammillate, but evenly and 

 elegantly rounded off. Sculpture consisting of delicate, evenly- 



