26 PROCEEDINGS OF THE ACADEMY OF [Feb., 



c. Surface delicately striate spirally. Alt. 3.5, diam. 

 5.3 to 5.8 mm., . . . H. yoshiwarana n. sp. 

 c 1 . Upper surface strongly striate spirally, 



H. yoshiwarana var. arata n. v. 



c 2 . Smaller, delicately striate. Alt. 2.2, diam. 4.5mm., 

 H. yoshiwarana var. microtheca n. v. 



Only one form is yet known from Chichijima, H. ogasawarana 

 var. discrepans. It differs from the typical form in having the 

 spiral striae obsolete on the last whorl. 



Alycaeus biexcisus n. sp. 



Shell similar in general form, size and sculpture to A. rdnhardti 

 Pils., but differing in the aperture. The lip is thickened and built 

 forward. The parietal margin of the lip is continuous, raised in a 

 blunt, somewhat triangular process. The columellar margin is 

 excised in a broad curve, and there is a more or less pronounced 

 notch at the junction of the basal and outer margins. The neck is 

 only slightly constricted, and is striate. Whorls 3J. Diam. 

 3^ mm. 



Suimura, Awa. Types No. 82,660 Coll. A. N. S. P., from 

 No. 8316 of Mr. Hirase's collection. 



This is one of the most differentiated of the Japanese species of 

 A lycceus. 

 Blanfordia japonic a var. simplex nov. 



The specimens of Blanfordia from Nippon which I have seen 

 differ from B. japonica of Sado Island, as defined by A. Adams, 

 in having the lip only a mere trifle expanded, hardly perceptibly 

 so, and not doubled, as it is said to be in B. japonica. The shell 

 consists of 5 whorls, the first one more or less worn, and it is cov- 

 ered with a yellowish-olivaceous cuticle. It is shorter and broader 

 than B. bensoni of Yesso. 



Length 6, diam. 4 mm. 



Nishigo, Uzen. Types No. 78,836 Coll. A. N. S. P., from No. 

 406 of Mr. Hirase's collection. Similar specimens have been sent 

 from Kajima, Satsuma, and one immature shell before me from 

 Ibuki, Omi (No. 842 of Mr. Hirase's collection), may prove to be 

 the same variety. 



The species of Blanfordia now known are as follows : 

 B. bensoni (A. Adams). 



Tomichia bensoni A. Ad., Ann. and Mag. Nat. Hist, (3), VIII, p, 

 308 (October, 1861). 



