156 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol. 50 



CHRYSODOMUS EULIMATUS Dall, n. sp. 



Shell solid, purple-brown, fusiform, with two rather large, smooth 

 nuclear and five subsequent whorls ; suture appressed, distinct, the 

 whorl in front of it somewhat constricted, axial sculpture of eight 

 strong, prominent, rounded ribs conspicuous at the shoulder and on 

 the periphery, but obsolete on the base, somewhat flexuous, the whole 

 surface roughened by low, sharp, slightly elevated incremental lines ; 

 spiral sculpture practically uniform over the surface and consisting 

 of major spiral cords less than a millimeter in diameter, rounded, 

 with subequal interspaces and minor intercalary threads, usually one, 

 but on the base often two to each interspace, the whole having a 

 rasplike feeling due to the incremental lines ; aperture long and nar- 

 row, livid brownish ; outer lip sharp, body and pillar with a glaze of 

 callus ; pillar long, strongly twisted, not pervious ; canal long, rather 

 wide, slightly recurved, with a moderate fasciole ; periostracum 

 brownish, much as in C. liratus Martyn ; operculum rather small, 

 with apical nucleus. Lon. of shell, $ , 68 ; of last whorl, 53 ; of 

 aperture and canal, 43 ; maximum diameter of shell, 34 mm. 



Station 5010, Aniwa Bay, Sakhalin Island, in 21 fathoms. U. S. 

 Nat. Mus., 110,541. 



This species has somewhat the general form of Kellettia kelletti, 

 but with a proportionately longer canal. The rasplike surface is 

 unique, so far, among the species from the North Pacific region. 

 The specimen is probably immature and may attain a considerably 

 larger size. 



CHRYSODOMUS TROCHOIDEUS Dall, n. sp. 



Shell small, white, broad, remarkably depressed, with about five 

 whorls ; nucleus eroded ; subsequent whorls rapidly increasing, suture 

 almost channeled, spiral sculpture of, in front of the suture, three or 

 four small, squarish, revolving ribs, with wider excavated inter- 

 spaces, then a strong peripheral keel, then six or seven, gradually 

 diminishing" on the base and canal, always narrower than the inter- 

 spaces, with an occasional intercalary thread ; spire and base short- 

 conic ; aperture wide, outer lip sharp, interior white, smooth ; body 

 with a wash of callus ; pillar short, strongly twisted, and flaring an- 

 teriorly ; canal very short, wide, and recurved, with no siphonal 

 fasciole. Lon. of shell, 20; of last whorl, 15; of aperture, 1 1.5 ; 

 max. lat. of shell, 14.5 ; of aperture, 7 mm. 



Stations 4972, in 440 fathoms, and 4973, in 600 fathoms, off Yoko- 

 hama, Japan. U. S. Nat. Mus., 110,494 and 110,495. 



A curious, squatty little species, unlike any other. 



