130 STPHO. 



* * Shell longitudinally plicate, decussated by revolving lira. 



S. KROYERI, Holler. PI. 53, figs. 333-336, 349-351. 

 Greyish white under a smooth, thin, brownish epidermis. 

 Length, 91 mill. 



Circumpolar; Greenland; Behring's Sea; Spitzbergen ; 



Labrador ; Banks of Newfoundland* 



In addition to the typical form I figure, from Kobelt, a stout 

 variety collected by Dall at Unalaschka. Among the synonyms 

 are S. (Bucc.) tortuosus, Reeve (fig. 349), S. arcticus, Phil. (fig. 

 336), and S. cretaceus, Reeve (fig. 350), and, possibly, S. scalari- 

 formis, Beck. S. plicatus, A. Ad. (fig. 351), from Japan, is 

 apparently the same species. 



S. FENESTRATUS, Turton. PI. 53, figs. 337-339. 



Shell rather thin, semi-transparent ; epidermis rather thin, 

 brownish yellow, rising into numerous fine prickles on the spiral 

 striae. Length, 1*7 inches. 



Norway ; Ireland ; Newfoundland ; 40 to 160 fathoms. 



S. LATERIOEUS, Holler. PI. 53, figs. 340-342. 



Light reddish brown. Length, 25 mill. 



Greenland ; Norway. 

 S. BRUNNEUS, Dall. PI. 53, fig. 343. 



Nearly allied to the preceding, but with smaller and higher 

 plications more plainly developed on the last whorl. 



Length, 18 mill. 



Behr ing's Sea ; 10 fathoms. 



S. PELLUCIDUS, Hancock. PL 53, fig. 344. 



Yellowish horn-color, pellucid. Length, -37 inch. 



West Coast of Davii Strait. 



Only one specimen dredged, thirty-five years ago ; has not 

 since been recognized. May be a Bela or even a Trophon, but 

 is compared by Hancock with Fusus Islandicus. 



S. VIRENS, Dall. PL 53, fig. 347. 



Shell small, similar to S. brunneus in general characters, but 

 covered with a grass-green epidermis, tinged with light brown in 

 some specimens. The canal is more clearly defined ; aperture 

 much shorter and rounder, ridges and grooves less prominent 



