1905.1 NATURAL SCIENCES OF PHILADELPHIA. 101 



NEW JAPANESE MARINE MOLLUSCA. 

 BY HENRY A. PILSBRY. 



The new species described herein are further evidences of the energy 

 and industry with which Mr. Hirase is investigating the molluscan 

 fauna of his country. For the ilhistrations I am indebted to Mr. 

 Vanatta. 



A name used by me last year, Terehra hedleyi, proves to have been 

 applied before to a different species.^ I propose, therefore, to change 

 the name of the Japanese species to Terehra hedleyana. The descrip- 

 tion may be found in these Proceedings for 1904, p. 3. 

 Conus voluminalis avus n. subsp. PI. II, fig. 4. 



General form of C. voluminalis Hinds, but the later whorls are almost 

 flat instead of concave above, and are smooth except for weak oblique 

 growth-wrinkles. The conic earlier whorls are weakly marked with 

 about three spiral Hues, and the angular periphery is very slightly 

 nodulous and projects a little above the suture. The last whorl is 

 smooth except for about twelve grooves at the base. 



Length 38, diam. 19 mm. 



Kikai, Osumi, in a deposit probably of PHocene age. Types No. 



88.296, A. N. S. P., from No. 1,578 of Mr. Hirase's collection. 

 Conus aratispira u- sp. PI. II, fig. 1. 



Shell slender and long, with high, turreted spire, biconic, the cone of 

 the spire about one-third the total length, somewhat terraced, the 

 whorls angular in the middle, smooth below the angle, steeply sloping 

 and marked with 4 or 5 spiral grooves above it, the shoulder of the inter- 

 mediate whorls very weakly tuberculate in well-preserved specimens. 

 Last whorl obliquely striate toward the base, the grooves and convex 

 intervals of equal size below, but upwards they become more widely 

 spaced, with wide flat intervals. The aperture is narrow, its length 

 about three-fourths that of the shell. 



Length 42, diam. 13.5 mm. 



Length about 48, diam. 16 mm. 



Kikai, Osumi, in a deposit of probably Pliocene age. Types No, 



88.297, A. N. S. P., from No. 1,579 of Mr. Hirase's collection. 



This belongs to a small group of cones with the spire much elevated. 



»See Proc. Linn. Soc. N. S. W., 1904, pp. 187, 211. 



