26 PROCEEDINGS OP THE ACADEMY OF [Feb., 



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

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

 c'. — Upper surface strongly striate spirally, 



if. yoshiwarana var. arata u. v. 



c". — ^Smaller, delicately striate. Alt. 2.2, diam. 4.5 mm., 



H. yoshiwarana var. mierotheca n. v. 



Only one form is yet kuowu from Chicliijima, H. ogasawarana 



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



spiral strise obsolete on the last whorl. 



Alycaeus biexcisus n. sp. 



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

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

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

 blmit, 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 3^. Diam. 

 3J mm. 



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

 No. 8316 of Mr. Hirase's collection. 



This i*s one of the most differentiated of the Japanese species of 

 Alycceus. 

 Blanfordia japonioa 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, Uzeu. 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). 



