314 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.56. 



white, the body and pillar with a thick coat of enamel, the pillar 

 short, twisted, with a wide canal. Height, 30; height of last whorl, 

 24; diameter, 20 mm. U. S. Nat. Mus. Cat. No. 205098. 



Type-locality. — Off Yokohama, Japan, in 600 fathoms. 



This is Ghrysodomus trochoideus Dall, 1907. 



PLICIFUSUS (RETIFLSUS1 INCISUS, new species. 



vShell of moderate size, whitish, with a yellowish brown periostra- 

 cmn and about seven well-rounded rapidly increasing whorls, the 

 nucleus eroded; suture distinct, deep; axial sculpture of numerous 

 retractively arcuate small plications with subequal interspaces, 

 extending from suture to suture, but becoming obsolete on the last 

 part of the last whorl; the incremental lines evident but not con- 

 spicuous; spiral sculpture of (on the penultimate whorl about 8) 

 flattish pairs of spirals divided by a shallow groove and the pairs 

 separated by deeper, narrower, somewhat channeled grooves; be- 

 tween these and the preceding suture is a narrow band of closer 

 threads; the former sculpture extends to the canal with much uni- 

 formity; aperture rather wide, the outer lip arcuate thin simple; 

 the body with a thin layer of callus; the pillar straight; the canal 

 short, wide, recmwed; the operculum normal, with a glazed border 

 on the inner side. Height of shell, 38; of last whorl, 26; of aperture, 

 19; diameter, 18 mm. U. S. Nat. Mus. Cat. No. 225614. 



Type-locality. — U. S. Fish Commission station 3643, in the western 

 Bermg Sea, in 100 fathoms, sand; bottom temperature, 31.7° F. 



PLICIFUSUS (RETIFUSUS) OCEANODROMAE, new species. 



Shell of moderate size, bucciniform, acute, v/hite, of about seven 

 whorls, moderately rounded, the suture distinct, not appressed; axial 

 sculpture of (on the last whorl about 22) narrow, rounded, retrac- 

 tively arcuate ribs, v/ith subequal interspaces, extending from the 

 suture to the base; the incremental lines not prominent; spiral scidp- 

 ture of close-set flattish threads of somewhat irregular strength, often 

 medially grooved, and having a tendency to associate in groups of 

 two or three, these cover the whole surface; a])erture buccinoid, re- 

 tractively conspicuously waved near the suture, protractively arcuate 

 beyond; throat white, body with a glaze, pillar slightly arcuate, canal 

 wide, recurved; operculum with apical nucleus; height of shell, 34; 

 of last whorl, 25; of aperture, 17; diameter, 16 mm. IT. S. Nat. Mus. 

 Cat. No. 205923. 



Type-locality. — U. S. Fish Commission station 4777, on Petrel 

 Bank, Bering Sea, in 52 fathoms, gravel. 



COLUS (LATIFUSUS) PHARCIDUS, new species. 



Shell of moderate size, white under an olivaceous periostracum, with 

 six well-rounded whorls exclusive of the (lost) nucleus; suture dis- 



