64 THE NAUTILUS. 



whorls of that color; periphery encircled by a narrow red-brown 

 band, the peristome pale red-brown. Whorls 5-|, very slowly in- 

 creasing, moderately convex, the last rounded at the periphery, 

 rather flattened beneath, hardly impressed around the axis, slowly 

 descending in front. Aperture oblique, broadly lunate ; peristome 

 narrowly expanded, thickened within, reflexed and abruptly dilated 

 over and closing the umbilicus ; columella concave, bearing an in- 

 conspicuous, low, oblique, fold-like tooth. Alt. 21-22, diam. 28 mm. 



Tane-ga-shima (Mr. Y. Hirase, no. 689). 



Only dead and somewhat weathered specimens were found; but 

 what remains of the cuticle on the parietal wall is a moderately 

 bright yellow tint. The species is related to G. myomphala, and 

 most resembles the variety minor of Gude, from which it differs in 

 the smaller aperture, the columellar tooth, less impressed axial 

 region and higher spire. In this connection I may mention that a 

 species of Ganesella, G. Adeline?, n. sp., has been sent from Oshima, 

 Mr. Hirase's no. 352. It is the shape of G. largillierti or somewhat 

 more pyramidal, but has a decidedly larger umbilicus than that 

 species. On a pinkish or pale yellow ground there are three blackish 

 bands, the peripheral united with that above, or with a reddish 

 space between, basal band wide, interior of the umbilicus and the 

 dilated columella very dark ; peristome well expanded. Alt. 26-|, 

 diam. 25, to alt. 24, diam. 22-J? mm. 



Diplommatina yakushimce n. sp. Shell similar to D. cassa but 

 more acutely tapering above. Whorls 5|, the last two of equal 

 diameter, last half whorl reduced. Sculpture of even, fine, low, 

 rather close, delicate stria? ; no spiral stria?. Aperture subcircular, 

 the lip expanded, duplicate ; columellar tooth blunt and strong ; 

 palatal fold short, above the columella. Length 2.3, diam. 1.3 mm. 



Yakushima (Mr. Y. Hirase, no. 679). 



D. tanegashimce is a large shell, conspicuously different in sculp- 

 ture. D. yakushimce is much smaller than any of the numerous 

 Japanese species of the same group. It resembles D. cassa most. 

 Besides its distribution in Hondo, D. cassa has now been sent from 

 five localities in the provinces Bungo, Higo and Satsuma, in Kiusiu. 

 It is evidently a species of wide distribution, though surpassed in this 

 respect by the tiny D. piisilla, which has been found in Hokkaido, 

 Hondo and Kiusiu, the latter island being represented by specimens 

 of the variety omiensis in Mr. Hirase's last sending 



