VERTIGO OF JAPAN AND EASTERN ASIA. 155 



hirasei glans PILSBRY & HIRASE, Proc. A. N. S. Phila., 1904, p. 

 631 (Okinoerabushima). 



The absence of angular and basal teeth and small size of 

 the others, the thin lip, without palatal callus and not in- 

 flexed, and the absence of a crest, are characteristic of this 

 species. 



V. h. glans. The characters I relied upon in character- 

 izing V. h. glans have little value, and I doubt whether it is 

 really separable. The shell is more egg-shaped and a trifle 

 smaller than the type specimen of V. hirasei, and there is no 

 upper palatal fold. 



Length 1.5, diam. 0.85 mm. (pi. 14, fig. 15, type specimen). 



Specimens of a race of V. hirasei were sent by Mr. Hirase 

 from Miyakejima, an island of Izu. The teeth are larger than 

 in the Kyushu form. It probably is another subspecies, but 

 the specimens are not in sufficiently good condition for 

 decision (pi. 14, figs. 11, 12). 



28a. Vertigo hirasei okinoerabuensis Pils. & Hir. PL 14, fig. 16. 



The shell is longer than V. hirasei, of paler tint, with the 

 lower palatal fold longer ; upper palatal present. Length 1.8, 

 diam. 0.95 mm. ; nearly 5 whorls. 



Okinoerabushima, an island of Osumi, Hirase. Type and 

 paratypes no. 87690 A. N. S. P. 



Vertigo hirasei okinoerabuensis PILS. & HIR., Proc. A. N. S. 

 Phila., 1904, p. 631. 



The type is figured. A rather weakly differentiated form. 



39. VERTIGO JAPONICA Pils. & Hir. PL 15, figs. 1, 2. 



The shell is perforate and rimate, oblong, the summit ob- 

 tuse, auburn, thin; surface smoothish, showing some weak 

 striae under the microscope, the last whorl distinctly striate 

 behind the lip. The whorls are convex, parted by a well 

 impressed suture, the last half of the last whorl tapering 

 towards the base, having a rather deep furrow running to 

 the auricle, but no crest. Aperture ovate, with four well- 

 developed teeth: parietal lamella large and rather long; 

 columellar lamella smaller, ascending a little inwardly; two 



