376 PROCEEDINGS OF THE ACADEMY OF [May, 



Gojo, Yamato. Length 10J, diam. 2 mm. ; whorls 9J. Sub- 

 columellar lamella immersed. 



]S"ara, Yamato. Length 9-J, diam. 2 mm. ; whorls 9. Sub- 

 columellar lamella immersed (PI. XX, fig. 55, the palatal arma- 

 ture represented as though showing through, but the shell is 

 opaque). This and the preceding are typical erberi. 



Chikubu-shima, an island in Lake Biwa, Omi (fig. 56). 

 Length varying from 10 to 12 J mm. ; whorls 9-10. The sub- 

 columellar lamella is immersed. Though some specimens are rather 

 large, their characters are otherwise as in the smaller ones with 

 them. The shell figured in outline is 10.3 mm. long. 



Kashima, Harima (PI. XX, figs. 57-60). Glossy, handsome 

 specimens, 10 to 11J- mm. long, with 10 to 10 J whorls. The 

 subcolumellar lamella is immersed; the palatal plicae are long, but 

 the lunella is very short in some examples (fig. 59), while in others 

 it is as long as in shells from Yamato. 



Clausilia aurantiaca var. plicilabris (A. Adams). PI. XX, figs. 61, 62, 63. 



C.plicilabris A. Ad., Ann. and Mag. Nat. Hist. (4 ser.), I, 1868, p. 

 469. Pfr., Monogr., VIII, p. 476. Kobelt, Fauna Moll. Extra- 

 mar. Jap., p. 98. 



C. aurantiaca var. hypoptychia Pilsbry, these Proceedings for 1901, 

 p. 652, footnote No. 7. 



Shell fusiform, moderately swollen, distinctly attenuated above, 

 slender near the apex; whitish under a pale-brown cuticle, all of 

 the specimens seen being more or less eroded on the surface. 

 Closely striate. Whorls about 10J, the last one tapering. Aper- 

 ture piriform. Peristome pale brown or dirty white, thick and 

 somewhat broadly reflexed, crossed by several unequal folds in the 

 subcolumellar region. Superior lamella rather strong, becoming low 

 within, barely continuous with or disconnected from the spiral 

 lamella, which penetrates just past the ventral side. Inferior 

 lamella very deeply receding, nearly as long within as the spiral 

 lamella. Subcolumellar lamella emerging to the lip-edge, accom- 

 panied by one or several accessory folds. Lunella joining the 

 lower palatal fold near its inner end, scarcely connected with the 

 upper palataljlold. 



Length 15, diam. 3.4 mm. 



Length 13.7, diam. 3.3 mm. 



Length 16, diam. 3.3 mm. 



