130 STPHO. 



* * Shell longitudinally plicate, decussated by revolving lira. 



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

 Greyish white under a smooth, thin, brownish epidermis. 

 Length, 91 mill. 



Circumpolar; Greenland; Behrmg'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. LATERICEUS, Moller. 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. 



Px'hriinfs Sea ; 10 fathoms. 



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



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



West Coast of Davit' Strait. 



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

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

 is compared by Hancock with Fuaus Jftlandicus. 



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 



