656 PROCEEDINGS OF THE ACADEMY OF [Dec. , 



C. AULACOPOMA Pils. 11 Hirado, Hizen (Y. Hirase). 

 C. BIGENERIS Pils. 12 Goto, Uzen (Y. Hirase). 



Section TYRANNOPH.EDUSA Pils. 

 C. DALLI Pils. 13 Tairiuji, Awa, Shikoku Island (Y. Hirase). 



Section STEREOPH^DUSA Bttg. O 



C. UNA Pils. ,4 Goto, Uzen (Y. Hirase.) 



11 C. aulacopoma n.sp. Fusiform, slowly tapering above to asubacute 

 apex, light reddish brown, weakly striatulate, the last whoil somewhat pro- 

 duced forward. Whorls 9j. Aperture piriform, the lip well reflexed, thick- 

 ened. Superior lamella low ; inferior deeply receding ; subcolumellar 

 emerging to the lip-edge. Principal plica long. Upper palatal plica short, 

 joined in the middle to the lunella, which is curved inward below (j-like), 

 with a nodule at its inner termination. Clausilium somewhat spout-like 

 distally, but wider there than in species of the ptychochila group. 



12 (7. bigeneris n.sp. About the size and shape of C. ignobilis ; pale- 

 brownish, faintly striate. Snbcolumellar lamella immersed ; lip broadly re- 

 Hexed. Principal plica rather short, dorsal and lateral ; upper palatal 

 plica oblique, almost joined in the middle to a long, slender lunella, the 

 lower end of which curves far inward. Length 14.3, diam. 3.5 mm. 



13 C. Dalli n.sp. With the general form of (J. mikado, the aperture is 

 much as in C. iotaptyx. Whorls 14 to 16. The subcolumellar lamella 

 emerges strongly, and sometimes the lip is puckered above it. Lunella as 

 in C. bilabrata. Length 18.5, diam. 4 mm. This exceedingly peculiar 

 many-whorl ed Clausilia belongs to the group of C. bilabrata by its palatal 

 armature, but in contour it resembles species of the group of C. mikado. 



14 C. una n.sp. General contour of C. oostoma Mlldff. , pale yellowish- 

 corneous, striate. Whorls 11^. Entire interlamellar margin of the lip 

 closely and deeply plicate. Upper palatal plica short, oblique j lower long 

 and arcuate, a short, rudimentary lunella rising from it. An extraordinary 

 Stereophmdusa, with interlamellar p ication like Luchuphcedusa callisto- 

 chila. 



