84 ADEORBIS. 



A. ADAMSI, Fischer. PI. 30, fig. 78. 



Convexly depressed, with sharp spire, sinuously concentrically 

 striate, umbilicus rather wide, aperture wide, obliquely oval. 



Diam. 4 mill. 



Guadeloupe, W. I., Cedar Key, Fla. 



A. SEGUEXZIANUS, Tryon. PI. 30, fig. 79. 



White, widely umbilicated, whorls very oblique, spire elevated, 

 suture impressed, microscopically striate, with intermediate spiral 

 lines, last whorl very oblique, umbilicus surrounded by an obtuse 

 angle of the base. Diam. 4 mill. 



Italy, Sicily ; 11-108 fms. 



Segueuza describes this species as A. depressus, preoccupied by A. 

 Adams. 



A. FRAGILIS, G. O. Sars. PI. 30, fig. 80. 



Thin, fragile, whitish, or slightly brownish, spire elevated, reg- 

 ularly spirally striate, whorls convex, with deep suture, last whorl 

 obliquely flattened above, aperture obliquely ovate, patulous, umbil- 

 icus large, defined by an obtuse angle. Diam. 2 mill. 



Loffoden Isl. ; W. coast of Nonvay ; 60-190 fms. 



A. PROMINULA, A. Ad. PI. 30, figs.' 81, 82. 



Umbilicus moderate, slightly bordered; thinly concentrically stri- 

 ate, translucent, polished, whorls scarcely prominent, rapidly increas- 

 ing, aperture obliquely rounded. Diam. 2 mill. 



Mino-Sima, Japan. 



A. MANULA, A. Ad. PI. 30, fig. 83. 



Moderately umbilicated, depressed, subdiscoidal, the spire a little 

 exserted, whorls rounded, slowly increasing, umbilicus bordered, 

 aperture rounded, Diam. 2*5 mill. 



Mino-Sima, Japan. 



A. TROCHULA, A. Ad. PL 30, fig. 84. 



Umbilicus small, defined by a rib, spire rather elevated, trochiform, 

 the whorls sloping above, periphery bluntly angulated, aperture 

 rather round. Diam. 3'5 mill. 



Gotto Is., Japan. 



A. PATRUELIS, A. Adams. PL 30, figs. 85, 86. 



Semipellucid, white, spire slightly elevated, last whorl sloping 

 above, obtusely triangular, rather flattened below, umbilicus some- 

 what narrow, columellar lip erect. Diam. 3 mill. 



Mino-Sima, Japan. 



