214 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Odostomia eldorana Bartsch, 1912 
Proceedings of the United States National Museum, 42:287; PI. 38, fig. 12. 
Shell elongate, conic, wax-yellow. (Nuclear whorls decollated.) Post- 
nuclear whorls moderately well-rounded, slightly constricted at the sutures, 
feebly roundly shouldered at the summit, marked with lines of growth 
and very fine spiral striations. Periphery of the last whorl well-rounded. 
Base slightly protracted, well-rounded, very narrowly umbilicated. Aper¬ 
ture elongate-ovate; posterior angle acute; outer lip thin at the edge; 
inner lip very oblique, somewhat sinuous, reflected over and adnate to the 
base, provided with a moderately strong fold, a little anterior to its 
insertion; parietal wall closed by a very thin callus. Length, 9; diameter, 
4 mm. (Bartsch.) 
Type in United States National Museum, No. 34246. Type locality, 
Kodiak Island, Alaska. 
Range. Known only from type locality. 
Odostomia elsa Dali and Bartsch, 1909 
Plate 62, fig. 1 
Bulletin 68, United States National Museum, 220; PI. 29, fig. 1. 
Shell ovate, umbilicated, yellowish-white. Nuclear whorls very small, 
deeply immersed in the first of the succeeding turns. Post-nuclear whorls 
well-rounded, with strongly concave summits, forming deeply channeled 
sutures, marked by slightly retractive lines of growth, and exceedingly 
fine, closely placed, wavy, spiral striations. Periphery of the last whorls 
well-rounded. Base short, inflated, moderately umbilicated, marked like 
the spire. Aperture ovate, posterior angle obtuse; columella curved, 
slightly reflected, not re-enforced by the base, provided with an obtuse 
fold some little distance anterior to its insertion; parietal wall covered by 
a thin callus. Length, 6.1; diameter, 3.6 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 55811. Type locality, 
Kodiak Island, Alaska. 
Range. Known only from type locality. 
Odostomia engbergi Bartsch, 1920 
Journal of the Washington Academy of Sciences, 10:1920. 
Shell elongate-ovate, yellow, a little paler toward the tip. Nuclear 
whorls eroded in all the specimens seen. Post-nuclear whorls narrowly 
tabulately shouldered at the summit, quite strongly rounded, marked by 
very fine slightly slanting lines of growth and equally fine spiral striations, 
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