190 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
the whorl, somewhat irregular, and more or less spirally, finely striated; 
aperture ovate, canal short, curved, and very wide; pillar thin, concave, 
short, twisted; outer lip expanded, thin. Long, of shell, 6; of aperture and 
canal, 40; max. diam., 37 mm. (Dali.) 
Type in United States National Museum, No. 109167. Type locality, 
off Pribilof Islands. 
Range. Bering Sea to Pribilof Islands. 
Volutopsius filosus Dali, 1919 
Plate 17, fig. 2 
Proceedings of the United States National Museum, 56:310. Bulletin 112, United 
States National Museum; PI. 10, fig. 1. 
Shell small, solid fusiform, of a livid flesh color with grayish-white 
outer coat and dehiscent olivaceous periostracum and about six whorls, 
the nucleus decorticated; suture distinct, rather deep; sculpture of uni¬ 
form, fine, flatfish threads, close-set, about two to a millimeter, covering 
the whole surface, with axial sculpture of fine, inconspicuous, incremental 
lines; whorls evenly rounded but not reflected; aperture elongate, the 
outer lip thickened and slightly reflected; the body and rather straight 
pillar thickly enameled; canal short and wide, slightly recurved, with a 
feeble fasciole; the operculum is brown, narrow, parallel-sided, with the 
nucleus at the right hand corner. Height of shell, 64; of last whorl, 
52; diameter, 30 mm. (Dali.) 
Type in United States National Museum, No. 223055. Type locality, 
United States Fish Commission Station 3283 off Khudubine Islands, 
Bering Sea. 
Range. Pribilof to Aleutian Islands, Bering Sea. 
Volutopsius callorhinus Dali, 1877 
Proceedings of the California Academy of Sciences, 7:7. Scientific Results of the Ex¬ 
ploration of Alaska; PI. 1, fig. 3, 1879. 
Shell white, solid, smooth, with faint traces of revolving striae, spire 
acute; embryonal whorls very minute, not mammillate; suture distinct, not 
channeled. Canal very short, wide, straight; aperture rounded, outer lip 
thickened, strongly waved behind; posterior angle not acute. Whorls 
seven, evenly tapering, not inflated. Length, 2; width, 9; aperture and 
canal, .92; long, spire, 1.08; width of aperture, .4 in. (Dali.) 
Type in United States National Museum. Type locality, St. Paul 
Island, Bering Sea. 
Range. Pribilof Islands, Bering Sea. 
[ 190 ] 
