NO. 2295. NEW NORTH PACIFIC MOLLUSKS—DALL. 365 



interspaces, slightly nodulous at the intersections with the spiral 

 cords ; there are also close obvious incremental regular lines over the 

 whole surface; aperture rounded quadrate, simple, a glaze on the 

 body, the pillar lip slightly thickened; operculum multispual. 

 Height, 12; diameter, 12.5 mm. U. S. Nat. Mus. Cat. No. 213951. 



Type-locality. — Coal Harbor, Shumagins, Alaska, in 8 fathoms, 

 mud; collected by W. H. Dall. Also Arctic and Kamchatka coasts. 



MARGAEITES (PUPILLAKIA) ROSSICA, new species. 



Shell large, solid, trochiform, of a pale gray color over a brilliant 

 nacre; whoils eight, including a small pinkish nucleus of two whorls; 

 spu-al sculpture of (on the spire three) strong blunt keels, of which 

 two near the periphery are the most prominent, with subequal wide 

 interspaces ; there is a fourth less prominent one on which the sutm-e 

 is laid wliich only shows on the last whorl; on the base there are about 

 10 smaller cords irregularly spaced; axis perforate by a narrow 

 twisted umbilicus; axial sculpture of very fine close uniform sharp 

 incremental lines; aperture rounded-quadrate, simple; outer lip thin, 

 sharp, imdulated by the sculpture; body lightly glazed; pillar lip 

 slightly toi tuous, hardly thickened, with a slight angle at the anterior 

 end; height of shell, 32; of last whorl, 22; maximum diameter, 30 mm. 

 U. S. Nat. Mus. Cat. No. 111046. 



Type-locality. — U. S. Bureau of Fisheries station 5012, in Aniwa 

 Bay, Sakhalin Island, in 40 fathoms, mud. 



This appears to be the largest and finast species of the group. 



MARGAEITES (LIRULAEIA) INFLATULA, new name. 



Margarites inflata Carpenter, Rep. Brit. Assoc, for 1863, p. 139, 1864, not of 

 Brown (as Trochus) Mem. Wernerian Society, vol. 8, pi. 1, fig. 10, 1839. — 

 Morris, Cat. Brit. Foss., ed. 2, p. 257, 1854; nor of Totten, 1834. 



This species is mcorrectly placed in the synonymy of M. pupilla 

 Gould in Tryon's Manual. The type is from Puget Sound, collected 

 by Dr. C. B. Kennerly. U. S. Nat. Mus. Cat. No. 4494. 



MARGARITES (LiEULAKIA) ALTHORPENSIS, new species. 



Shell small, solid, trochiform, nacreous white, with a minute sub- 

 globular smooth nucleus and five subsequent whorls; spiral sculpture 

 of five uniform prominent threads on the upper half of the last whorl 

 and between the sutures on the spu-e, with wider interspaces; onthebase 

 the threads are more numerous, smaller and with subequal inter- 

 spaces, extending from near the periphery to the umbilicus, which is 

 perforate and not internally sculptured; axial sculpture of fine regu- 

 lar incremental lines not modifying the spirals; aperture rounded- 

 quadrate, simple, sharpedged, the hps connected by a glaze on the 

 body, not an\^here reflected; height, 3; larger diameter, 3.2 mm. 

 U. S. Nat. Mus. Cat. No. 208559. 



