ADEORBIS. 83 



FAMILY ADEORBIID^E. 

 Genus ADEORBIS, S. Wood, 1842. 



A, PLANA, A. Ad. PL 30, figs. 69, 70. 



Much depressed, last whorl obliquely flattened, broad, spirally 

 striated, umbilicus very large, its wall spirally flattened, aperture 

 wide, oblique, white. Diam. 12 mill. 



Philippines, Japan. 



A. ELEGANS, A. Adams. PI. 30, fig. 71. 



White or yellowish white, depressed, closely striate and with im- 

 pressed spiral lines, last whorl obliquely flattened in front, umbilicus 

 large, its wall rounded, aperture wide, obliquely subtriangular. 



Diam. 10-12 mill. 



Ins. St. Thomas, W. I. 



A. DEPKESSUS, A. Ad. PL 30, fig. 72. 



Much depressed, broad, smooth, last whorl not obliquely flattened 

 above, umbilicus moderate white. Diam. 4 mill. 



Mino-Sima, Japan. 

 A. STRIATELLA, Montr. PL 30, figs. 73, 74. 



Spirally striate with impressed lines and suboblique curved lines 

 of punctations, white, subtranslucent, shining, umbilicus narrow, 

 spire somewhat elevated,* aperture transversely oval. 



Diam. 5*5 mill. 



New Caledonia. 



A. ORBELLA, A. Ad. PL 30, fig. 75. 



White, moderately depressed, with somewhat elevated spire, whorls 

 sloping above, umbilicus very large, defined, aperture obliquely 

 rounded. Diam. 4 mill. 



Mino Sima, Japan. 



A. CLAUSUS, A. Ad. PL 30, fig. 76. 



Finely concentrically striated, translucent, spire convexly de- 

 pressed, whorls somewhat flattened above, umbilicus partly covered 



by callus. Diam. 3 mill. 



Mino-Sima, Japan. 



A. JAPONICUS, A. Ad. PL 30, fig. 77. 



Depressed, smooth, semipellucid, concentrically obliquely striated, 

 whorls slowly increasing, rounded, with impressed suture, umbilicus 

 wide, bordered by a strong rib. Diam. 2'5 mill. 



Gotto Is., Japan. 



