582 PROCEEDINGS OF THE ACADEMY OF [Nov., 



NEW LAND MOLLTJSKS OF THE JAPANESE EMPIEE. 

 BY HENRY A. PILSBRY. 



(S) 



Alycaeus tanegashimae n. sp. 



Shell similar in shape to A. harimensis. Pale brown, the early 

 whorls orange-red, or uniform whitish -corneous. Whorls 3J, the 

 last slowly descending, moderately constricted, then swollen again. 

 Sculpture of crowded rib- striae, finer at the constriction; no spiral 

 striae. Aperture very oblique, circular, the peristome double. 

 Operculum nearly smooth, the edges of the whorls slightly pro- 

 jecting. 



Alt. 1.7. diam. 3 mm. 



Tane-ga-shima, Osumi (Mr. Y. Hirase, No. 723). 



Closely related to A. harimensis, but that is a much larger 

 species. 

 Carychium pessimum n. sp. 



Shell very minute, corneous-white, fusiform-conic, minutely 

 striate. Whorls 4f , convex. Aperture ovate, the peristome well 

 expanded, very much thickened within, with a strong tooth-like 

 prominence just above the middle of the outer lip, marked by a 

 groove behind the lip. Columella truncate below, the columellar 

 lamella small, receding. 



Length 1.8 mm. 



Tane-ga-shima, Osumi (Mr. Y. Hirase, No. 729). 



This species is smaller and less conically tapering than C. nodu- 

 liferum Reinh. The columellar lamella is smaller, much less 

 prominent than in either C. noduliferum or C. cymatoplax. 

 Macrochlamys dulcis n. sp. 



Shell depressed, brownish-yellow, rather transparent, narrowly 

 perforate. Surface brilliantly glossy, weakly marked by growth - 

 lines, and under a strong lens seen to be engraved with excessively 

 fine, crowded spiral lines, which are obsolete on the upper and 

 peripheral portions of the last whorl. Spire a little convex, nar- 

 row. Whorls 4, slowly widening, the last very wide, concave at 



