484 PROCEEDINGS OF THE ACADEMY OF [July, 



which finds no parallel among known Japanese Clausiliidce. It 

 is allied to C. Fultoni Sykes, described from Kinnayaraa, Shikoku 

 Island, a species with fine striation. 



Family PUPIDJE. 

 Bifidaria armigerella var. luchuana nov. PI. XXVIII, fig. 54. 



Shell similar to B. armigerella (Reinh.), but with an infra- 

 parietal lamella developed. Length 2.25, diam. 1.2 mm. 



Kunchan, Okinawa (types No. 80,992 Coll. A. N. S. P., from 

 No. 6196 of Mr. Hirase's collection), and Yayeyama (No. 619 of 

 Mr. Hirase's collection). 



The type lot contains one sinistral specimen. B. armigerella 

 (Reinhardt) is described and figured as with but two teeth on the 

 parietal margin, evidently the angular and parietal lamellse. It is 

 from Misaki, in the province of Sagami. 



Vertigo Hirasei Pilsbry. PI. XXVIII, fig. 53. 



Pilsbry, Nautilus, XIV, p. 128 (March 1, 1901). 



Shell very minute, openly rimate, ovate, brown, glossy, some- 

 what transparent, faintly striatulate. Whorls 4^, the last a little 

 contracted and straightened near the aperture. Aperture trun- 

 cate-ovate; peristome thin, hardly expanded, the outer margin 

 straightened but not inflexed to form a sinulus, although it pro- 

 jects forward in a slight point or angle, visible when viewed in 

 profile. Parietal wall bearing a rather strong lamella in the mid- 

 dle; columella with a somewhat smaller lamella; palatal plicae 

 two, near together, the lower larger, elongated, the upper tuber- 

 cular, sometimes obsolete. 



Alt If, diam. 1 mm. 



Yanagawa, province Chikugo, Kiushiu Island (Mr. Y. Hirase). 



Types No. 79,738 Coll. A. N. S. P., from No. 570 coll. Hirase. 



Belonging to the V. modesta group, this species is smaller 

 than its allies. As in some forms of V. modesta, the upper palatal 

 fold is sometimes obsolete. The only other Japanese Vertigo 

 described, to my knowledge, is V. hydrophila (Reinh.), from the 

 opposite end of the empire, Hakodate, Hokkaido Island. Rein- 

 hardt' s species belongs to the group of V. ovata, and has five or 

 six teeth. It is about the size of V. Hirasei, measuring If by 

 1 mm. 



