6 THE NAUTILUS. 



lique, wide-lunate, the peristome sim|ile and tliin. Alt. .7, diam. 

 1.1 mm. 



Kunashiri, Chisoliima chain (Kuril Is.). Types no. 86491 A. N. 

 S. P., from no. 1155 of Mr. Hirase's collection. 



This very small, whitish species is m.ore closely sculptured than 

 any Japanese Punctum, unless P. leptiim Westerl, be an exception. 

 That species from Nagasaki is larger and has a much narrower 

 umbilicus. 



Macrochlamys chnunax n. sp. 



Shell perforate, convex-conic above, more convex below the 

 slightly obtusely angular periphery, the angle above the middle ; 

 thin, somewhat transparent, pale yellow. Surface brilliantly glossy, 

 showing some slight growth-wrinkles and densely-crowded, very 

 minute spiral striai. Whorls 4, moderately convex, the last about 

 double the width of the preceding, subangular, the angle becoming 

 obsolete at the aperture. Aperture rather large, rounded-lunate. 

 Peristome simple and thin, reflexed at the columellar insertion. Alt. 

 2.7, diam. 4.5 mm. 



Imotoshima, an islet south of the Hahajima, Ogasawara. Types 

 no. 83030 A. N. S. P., from no. 899 of Mr. Hirase's collection. 

 Also found on Hahajima. 



Macrochlamys cerasina shinanoensis n. subsp. 



Shell resembling M. cerasina and M. gudei., but much larger than 

 the former, more globose and more glossy than the latter. There are 

 6^ convex, very slowly widening whorls, the last one angular at the 

 periphery in front, becoming rounded on the latter part. Spire low 

 conic, with nearly straight outlines. Base strongly convex, impressed 

 around the narrow axial perforation, which is nearly concealed by 

 the triangular dilation of the columellar lip. Alt. 10.4, diam. 7.4 mm. 



Enasan, Shinano. Types no. 86483 A. N. S. P., from no. 1173 

 of Mr. Hirase's collection. 



Tornatellina monodonta n. sp. 



Shell imperforate, ovate-conic, thin, pale yellowish corneous, im- 

 perfectly transparent, almost smooth. Spire straightly conic, the 

 apex obtuse. Whorls 4|, moderately convex, the last somewhat 

 swollen. Aperture oblicpie, ovate, somewhat less than half the total 

 length. Outer lip thin and simple, columella strongly twisted, form- 



