618 PROCEEDINGS OF THE ACADEMY OF [Sept., 



outline, with the neck nearer the aperture and the peristome stronger. 

 The sutural "tube" is long, as in A. purus. 



Alyoseus laevicervix n. sp. 



The shell is rather depressed, light olive greenish. Whorls 3^, the 

 first projecting and smooth, the rest finely rib-striate and latticed by 

 lower, finer spiral strioe. The last half of the last whorl is swollen, with 

 closer rib-striaj, the spirals becoming obsolete. The sutural "tube" is 

 short and irregular. The neck is moderately contracted, and smooth 

 to the aperture. Aperture oblique, circular, the peristome somewhat 

 thickened, with a low thin rib close to the edge. 



Alt. 3.7, diam. 4 nun. 



Kuchinoerabushima, Osumi. Types No. 87,699, A. N. 8. P., from 

 No. 1,280 of Mr. Hirase's collection. 



This species is related to A. satsumanus, but it is larger, with a shorter 

 sutural "tube," a smooth neck, and more prominent spiral striae. 



Pupinella oshimae tokunoshimana n. subsp. 



The shell is dirty white, more slender than P. oshimce, and umbilicate, 

 the umbilicus half covered by the lip, and bounded by a very strong 

 keel. The upper or anal notch of the aperture is narrow, straight and 

 oblique, its two bounding walls of nearly equal length, while in P. 

 oshimce the outer lip of the canal is decidedly shorter than the inner, 

 and the canal is thus enlarged and opens more backwards. The parietal 

 callous and that at the opening of the anal canal are less extensive than 

 in P. oshimce. 



Length 9.3, diam. above aperture 4, greatest diam. 5 mm. 



Tokunoshima, Osumi. Types No. 87,506, A. N. S. P., from No. 

 1,214 of Mr. Hirase's collection. 



Cyolotus nudus n. sp. 



Shell openly umbilicate, lusterless, whitish under a very thin slightly 

 yellov\-ish cuticle, readily lost, with an opaque whitish sutural margin 

 from which short whitish streaks radiate. The surface is but slightly 

 roughened by growth-lines, and an intermediate whorl of the spire is 

 very finely, closely striate spirally; the last Ih whorls hardly or not 

 showing spirals. The spire is small and acutely conic. The first 1^ 

 whorls are brown, project nipple-like, and are distinctly tilted. Whorls 

 41 to 4^, very convex, the last tubular, barely in contact with the pre- 

 ceding at the apertiu-e. The aperture is circular, vertical, the peris- 

 tome simple. The operculum is whitish and lodges just within the 

 peristome, is concave externally, with a sunken smooth nucleus and 

 a'spiral lamella closely re^•oh■ing on the other whorls. 



