224 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Subgenus Latisipho Dali, 1916 
Colus hypolispus Dali, 1891 
Plate 15, fig. 1 
Proceedings of the United States National Museum , 14:188; 17; PI. 27, fig. 1, 1894. 
Shell polished, brown, with rounded whorls sculptured only by a few 
obsolete spirals and mafleations with six or seven whorls, well-rounded 
to a distinct suture and rather acute spire; canal very short and strongly 
recurved, axis almost pervious; outer lip sinuous, throat white, a well- 
marked callus on the pillar and body. Length of shell, 55; of aperture, 
28; breadth of shell, 26 mm. (Dali.) 
Type in United States National Museum. Type locality, U.S.S. “Alba¬ 
tross” Station 3254, in Bering Sea. 
Range. Arctic Ocean to Aleutian and Shelikoff Strait, Alaska. 
Colus errones Dali, 1919 
Plate 9, fig. 6 
Proceedings of the United States National Museum , 56:321. 
Shell of moderate size, dark reddish-brown, acute, with six rapidly 
increasing moderately convex whorls and a glossy subglobular smooth 
nucleus of about one whorl; suture distinct, not appressed; periostracum 
polished; axial sculpture of faint incremental lines; spiral sculpture of 
the early whorls of numerous fine striae, covering the whole surface with 
wider flat interspaces; this sculpture continues, becoming less and less 
evident until except under a lens the surface appears to be smooth except 
on the canal; aperture semilunate, outer lip thin, simple, sigmoidly arcu¬ 
ate; throat whitish, body with a thin callus, pillar straight, attenuated 
in front; canal short, wide, strongly recurved. Height of shell, 47; 
of last whorl, 32; of aperture, 23; diam., 22 mm. (Dali.) 
Type in United States National Museum, No. 226227. Type locality, 
Bering Sea. 
Range. Pribilof Islands, Bering Sea, to Straits of Juan de Fuca, in 
308 fathoms. 
Colus halli Dali, 1873 
Plate 4, fig. 9 
Proceedings of the California Academy of Sciences, 5:59; PI. 2, fig. 3. 
Shell fusiform, solid and heavy, of five and a half whorls, the last 
much the largest; suture subcanaliculate, not deep, but very distinct; 
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