■so. 2295. ^EW NORTH PACIFIC MOLLVSKS—DALL. 317 



whorl; aperture ovate, outer lip thin, sharp; inner lip erased, white; 

 pillar short, twisted; canal short, rather wide, somewhat recurved. 

 Height of shell, 20; of last whorl, 14; of aperture, 10; diameter, 9 

 mm. U. S. Nat. Mus. Cat. No. 334438. 



Type-locality. — U. S. Fish Commission station 3282, off Khudubine 

 Island, Bering Sea, in 53 fathoms; bottom temperature, 38. 2"^ F. 



The operculum is normal and rather large for the size of the shell, 



COLUS (AULACOFUSUS) SAPIUS, new species. 



Shell small, thin, the apical whorls eroded, but six prominently 

 rounded turns remain; suture distinct, not appressed, the whorl in 

 front of it flattened and without spiral sculpture for a short distance; 

 the shell is white with a straw-colored periostracum; axial sculpture 

 of faint incremental lines; spiral sculpture of (on the penultimate 

 whorl about eight) strong squarish cords with subequal rather deep, 

 channeled interspaces, both slightly v\Tinkled by the incremental lines 

 and obsolete on the canal; there are a few minor spirals behind the 

 posterior cord; aperture roundly ovate, outer lip thin, simple, inner 

 Up erased, pillar white, twisted, axis pervious; canal rather long, nar- 

 row, well defined, somewhat recm-ved; height of shell, 22; of last 

 whorl, 15; diameter, 11 mm. U. S. Nat. Mus. Cat. No. 122597. 



Type-locality. — U. S. Fish Commission station 2859, southwest of 

 Sitka, Alaska, in 1,569 fathoms, ooze. 



COLUS (AULACOFUSUS) CALATK US, new species. 



Shell small, thin, white under a straw-colored periostracum, with 

 more than six well-rounded whorls, the apex defective; suture dis- 

 tinct, not appressed; axial sculpture of faint incremental lines; spiral 

 sculpture of (on the penultimate whorl 13) fine rounded low subequal 

 cords with narrower interspaces, the cords at and below the periphery 

 a little more close-set, this sculpture covering the whole shell very 

 evenly; aperture wide, the outer lip thickened and slightly crenulated 

 by the external sculpture, body erased; pillar short, attenuated in 

 front; canal short, wide, slightly recurved; height of shell, 26; of last 

 whorl, IS; of aperture, 12; diameter, 13 mm. U. S. Nat. Mus. Cat. 

 No. 106864. 



Type-locality. — U. S. Fish Commission station 2853, near the Shu- 

 magin Islands, Alaska, in 159 fathoms, sand. 



COLUS (AULACOFUSUS) CAPPONIUS, new species. 



Shell of moderate size, the spire longer than the aperture, white, 

 with a thin polished, oUvaceous periostracum, and more than five 

 whorls (the apex defective); whorls moderately rounded, suture dis- 

 tinct, deep; axial sculpture of fine silky incremental lines, sometimes 

 with a tendency to cause wrinkles near the suture; spiral sculpture 



