204 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
sutural channel almost obliterated; apical whorls with two, later whorls 
with three, strong but not sharp carinae, revolving nearly equidistant be¬ 
tween the sutures, the posterior carina slightly smaller than the others; 
on the base are about half a dozen similar carinae beside the small spiral 
threads on the canal; other spiral sculpture of minute striae and threads 
pretty uniform; axial sculpture if faint irregular incremental lines on 
which the periostracum is sometimes raised; aperture white, internally 
reflecting the stronger sculpture; outer lip thin, not reflected, body erased, 
pillar short, strong, sharply twisted, with a short wide canal. Height of 
shell, 46; of last whorl, 33; diameter, 30 mm. (Dali.) 
Type in United States National Museum, No. 122667. Type locality, 
United States Fish Commission Station 2919 in 984 fathoms, near Cortez 
Bank. 
Range. Straits of Juan de Fuca to San Diego, California, in 152-984 
fathoms. 
Ancistrolepis beringianus Dali, 1919 
Plate 21, fig. 1 
Proceedings of the United States National Museum, 56 :313. 
Shell large, solid, livid whitish, with a long acute spire, the apex de¬ 
fective, but the shell had more than six whorls, separated by a very narrow 
deep suture and covered by a very thin pale olivaceous periostracum; 
whorls well-rounded, with four or five nearly obsolete flattish spiral ridges 
between the base and the shoulder, with wider interspaces, the base de¬ 
limited by a stronger cord, in front of which are eight or ten similar 
flattish spirals more closely set. There is also a very minute scratchy 
spiral striation; axial sculpture only of rather rude incremental lines; 
aperture short and wide, the outer lip thin, not expanded, the body erased, 
the pillar short, white, twisted, the axis not quite pervious, and with a 
feeble fasciole. Height of five whorls, 98; of last whorl, 66; of aperture 
and short wide canal, 51; diameter, 52 mm. (Dali.) 
Type in United States National Museum, No. 205401. Type locality, 
United States Fish Commission Station 4794, western Bering Sea. 
Range. Bering Sea, off Starichkoff Island. 
Genus SULCOSINUS Dali, 1894 
Shell thin, with a deeply channeled suture, strongly reflected lip, and 
thick parietal callous deposit. (Dali.) 
Type. Buccinum taphrium Dali, 1891. 
Distribution. Arctic, West America. 
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