444 PROCEEDINGS OF THE ACADEMY OF [1900. 



Hakone Mts. (B. Schmacker), types No. 60,370, coll. A. N. 

 S. P. 



A Hemiphcedusa, differing from all of the platydera group by 

 the strongly spiral and heavily developed inferior lamella and wholly 

 immersed subcolumellar lamella. The clausilium has the character- 

 istic parallel-sided contour of the section. C. hakonensis will 

 become the type of a new group or ' ' Formenkreis ' ' in Hemi- 

 phcedusa, characterized by the strongly spiral, Stereophwdusa-likQ 

 inferior lamella. 



Clausilia awajiensis n. sp. PI. XIV, figs. 15, 16, 17. 



Shell shortly rimate, obesely fusiform, thin, a little transparent, 

 strongly but shortly attenuated above, the last whorl decidedly 

 tapering. Corneous -bro wn ; the last whorl reddish, glossy, dis- 

 tinctly, finely striate. Whorls 9J. Aperture small, pyriform, the 

 peristome white, moderately expanded, rather thin. Superior 

 lamella rather thin, oblique, continuous with the spiral lamella. 

 Inferior lamella very low and inconspicuous, stronger within and 

 almosl vertically ascending. Subcolumellar lamella not reaching 

 the lip-edge, even immersed. Principal plica long, reaching 

 almost to the lip, extending inward beyond the lateral lunella. 

 Upper palatal plica very short, its outer end connected with a 

 rather strong, oblique lunella, recurved toward its lower end ; no 

 lower palatal plica. Clausilium slender, tongue-shaped, emar- 

 ginate posteriorly, slowly tapering below. 



Length 12J, diam. 3^ mm. 



Fukura, Awaji Island (Mr. Y. Hirase). 



A Hemiphcedusa near C. aurantiaca Bttg. , but with fewer 

 whorls, the lunella more lateral, not I -shaped, a lower palatal 

 plica being absent. 



Clausilia subaurantiaca n. sp. PI. XIV, figs. 5, 6, 7. 



Shell slenderly fusiform, attenuated above, the last whorl rather 

 narrower; brown, but slightly glossy, weakly striate, more strongly 

 so on the last whorl. Whorls nearly 11, the upper convex, the last 

 two nearly flat. Aperture small, somewhat oblique, retracted and 

 with a well-marked sinulus above, pyriform, produced; peristome 

 thick, well reflexed. Superior lamella strong, oblique, continuous 

 with the spiral lamella. Inferior lamella immersed, inconspicuous 

 in a front view, becoming strong and subvertical within. Subcol- 



