TORINIA. 23 



impressed spiral lines ; color yellowish brown ; base slightly con- 

 vex, having numerous fine spiral lines near the periphery, also 

 covered with low ribs radiating from the umbilicus, near which 

 they are nodulous. Diam. 12 mill. 



Coast of New England. 

 T. ROSCLENTA, Watson. PI. 6, fig. 34. 



Umbilicus very wide ; whorls 5, shouldered with three or four 

 elevated spiral threads, last whorl with numerous spiral threads, 

 the upper four of which are very strong; color ruddy-yellow 

 with bright crimson spots ; umbilical wall with numerous spiral 

 threads ; aperture round. Diam. 6 mill. 



Port Jackson. 



Unfyured and Doubtful Species. 



T. RIISET, Morch. West Indies. 



T. SULCIFERA, Pease. Polynesia. 



T. BICARINATA, Phil. China Sea. 



Probably not a member of this family. 



T. TRICINCTA, Phil. Guinea. 



T. IMPLEXA, Migh. Oahu. 



Subgeiuis PSEUDOMALAXIS, Fisch., 1883. 

 T. ZANCLEA, Phil. PL 6, figs. 26-28. 



Shell minute, planorbiform ; whorls quadrangular, periphery 

 broad, with a rib above and another below; color fulvous, 

 clouded with alternate light and dark; umbilicus very wide; 

 aperture nearly square. Operculum as in typical Torinia. 

 Diam. 3'5 mill. 



Mediterranean. 



Subgenus GYRISCUS, Tiberi, 1867. 

 T. JEFFREYSIANA, Tiberi. PL 6, figs. 29, 30 ; PL 1, fig. 17. 



Shell turbinate; whorls 7, rounded, granular in spiral series, 

 suture profound, last whorl slightly depressed at the base; color 

 yellowish, passing into a pale reddish brown ; umbilicus moder- 

 ate, deep; aperture subrotund, the margins united by a callous 

 deposit, columellar lip sinuous, reflected, closing a part of the 

 umbilicus. Diam. 8-9, alt. 10-11 mill. 



Mediterranean. 



