364 PROCEEDINGS OF THE ACADEMY OF [May, 



Tomisato. Kii. Types No. 82,485, A. N. S. P., from No. 764a 

 of ;Mr. Hirase's collection. It occurs also at Nachi, Kii. 



This species is related to C. sublunellata and C. opeas, both 

 described by Dr. von ]Mollendorff from the mountains around 

 Nikko, Prov. Shimotsuke. Compared with the description of C. 

 sublunelfnta, the present species is less slender, with fewer whorls 

 and a larger ajierture. C. opeas is a smaller and much more 

 slender species, with much smaller aperture. 



A remarkable variation occurs in one of the specimens of the 

 tj-pe lot ojjened, which has two short palatal folds above, not con- 

 nected with the lunella (fig. 19). 



In a specimen from Nachi opened, the single upper palatal fold 

 is connected with the lunella (fig. 18). This specimen measures, 

 length 27, diam. 6.8 mm., and has nearly 10 whorls. 



Clausilia subulina var. leucopeas nov. ri. XVIII. figs. 28, 29, 30, 31, 32. 



Shell rimate, fusiform or somewhat cylindric, whitish-corneous or 

 greenish -corneous, densely and finely but sharply striate, glossy. 

 Spire tapering and attenuated above, though rather large at the 

 » summit. Apex obtuse. AVhorls 10, convex, the last somewhat 

 flattened, not more coarsely striate. Aperture somewhat oblique, 

 piriform, the peristome continuous, very shortly free above, a little 

 notched at the position of the superior lamella ; white, reflexed and 

 a little thickened within. Superior lamella rather strong, oblique, 

 continuous with the spiral lamella, which extends inward to the 

 middle of the ventral side. Inferior lamella receding, inconspicuous 

 in a front view or forming a slight columellar fold ; thickened and 

 rather straightly ascending within, penetrating as far as or a little 

 further than the spiral lamella. Subcolumellar lamella usually 

 emerging to the lip-edge (fig. 30), but sometimes immersed (fig. 

 29). Principal plica strong, visible deep in the throat, extending 

 to a latero-ventral position. Below it there is a short, oblique upper 

 palatal plica, weakly connected with, or almost separated fx'om, the 

 rather narrow lunella, which is stronger below than above (and 

 sometimes reduced or almost wholly wanting). 



IxMigth 15.7, diam. .'i.H, length of aperture 3.5 mm. 



I>ength 16, diam. 3.2, length of aperture 3.5 mm. 



I^ingth 14, diam. 3.3, length of aperture 3.3 mm. 



Clau.silium (PI. XVIII, figs. 31, 32) long and parallel-sided, 



