60 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
attingentibus, lineis rectis ad apicem continuis; umbilico nullo. Long., 
.27; long, spir., .16; lat., .16 poll. (Carpenter.) 
Shell obese, smooth, whitish; with seven whorls, scarcely touching, 
increasing rapidly; with twelve acute costae standing out sharply; below 
the suture slightly winged, with straight lines continuing to the apex; 
no umbilicus. (Translation.) 
Type in Museum Cuming. Type locality, Panama. 
Range. Catalina Island, to Todos Santos Bay, Lower California, 
to Panama. 
Epitonium columbianum Dali, 1917 
Proceedings of the United States National Museum, 53:481. 
Shell acute, yellowish-white, with nine whorls exclusive of the (lost) 
nucleus; varices eighteen, low, rounded, more or less striated, without 
any angulation, continuous over the suture into which they dip and 
nearly encircling the spire; the type-specimen has the interspaces more 
or less finely axially striated, but the southern specimens seem quite 
smooth; base and aperture rounded, the anterior margin of the latter 
slightly angular. Length, 21; diameter, 7.5 mm. (Dali.) 
Type in United States National Museum, No. 111211. Type locality, 
off the Columbia River, Oregon. 
Range. Off the Columbia River, Oregon, to Gulf of California. 
Epitonium sawinae Dali, 1903 
Plate 31, fig. 2 
Proceedings of the Biological Society of Washington, 16:173. Bulletin 112, United 
States National Museum; PI. 6, fig. 12. 
Shell small, elongate, sub-acute, with ten or more whorls; nucleus 
of three smooth polished whorls; subsequent whorls smooth, with about 
nineteen low, sharp, slightly reflected varices, which entirely cross the 
whorl; at the shoulder these are slightly spinose; aperture rounded 
ovate entire, with a small spine at the shoulder angle and a less con¬ 
spicuous one at the inner base of the aperture; there is no trace of a basal 
cord or disk, and no spiral sculpture. Length, 10.5; diameter of aper¬ 
ture, 2.5; maximum diameter of last whorl, 4.0 mm. (Dali.) 
Type in United States National Museum, No. 109309. Type locality, 
near Avalon, Catalina Island. 
Range. Monterey to Catalina Island, California, to off Coronado 
Islands, in 34 fathoms. 
Described as Sc ala sawinae. 
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