212 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Subgenus Aulacofusus Dali, 1918 
Colus spitsbergensis Reeve, 1855 
Plate 4, fig. 7 
Last of the Arctic Voyages, 395; PI. 32, figs. 6a, 6b. 
Testa fusiformi-turrita, canali breviusculo, vix recurve, spirae suturis 
impressis, anfractibus rotundatis, spiraliter costatis, subfuniculatis, versus 
aperturam sulco superficiario obsolete divisis, interstitilis excavatis, aper- 
tura, ovato, labro perculiariter effuso; fulvo-fusca, costis subnitentibus, 
columella roseo pallide tincta. (Reeve.) 
Shell fusiform-turreted, canal rather short, scarcely excurved, sutures 
of spire impressed, whorls rounded, spirally costate, subfuniculate, toward 
the aperture divided obsoletely by a superficial sulcus; interstices excavate, 
aperture ovate, with peculiarly effuse lip; yellowish-gray, with ribs some¬ 
what spiny, columella palely tinted with rose. (Translation.) 
Type in British Museum. Type locality, Spitzbergen. 
Range. Arctic Ocean to Straits of Juan de Fuca; also Japan; circum- 
boreal. 
Described as Buccinofusus. 
Colus periscelidus Dali, 1891 
Plate 15, fig. 6 
Proceedings of the United States National Museum, 14:187; 17; PI. 27, fig. 6, 1894. 
Like a diminutive C. spitsbergensis, white with yellowish epidermis, 
five strong spirals on upper and ten on last whorl with deep channels be¬ 
tween them. Whorls eight, canal short, aperture grooved to correspond 
with the external spirals; throat white; whorls rounded, spire acute. Length 
of shell, 46; of aperture, 19; breadth, 19 mm. (Dali.) 
Type in United States National Museum. Type locality, U.S.S. “Alba¬ 
tross” Station 2842, off Akutan Islands, Alaska. 
Range. Commander and Aleutian Islands eastward to Sannak, Alaska. 
Colus herendeeni Dali, 1902 
Plate 4, fig. 10 
Proceedings of the United States National Museum, 24:527; PI. 36, fig. 10. 
Shell with about nine whorls, a slender spire, small but not planorboid 
nucleus, and pale-olive periostracum. It is pinkish-white with a yellowish 
substratum and the periostracum is dull and without polish or villosity; 
lines of growth distinct, spiral sculpture of fine striae with wider flattish 
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