196 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Odostomia jewetti Dali and Bartsch, 1907 
Plate 66, fig. 3; Plate 63, fig. 3 
Proceedings of the United States National Museum, 33:523; PI. 47, fig. 3. 
Shell elongate-ovate, white. Nuclear whorls very small, smooth, 
obliquely immersed in the first of the succeeding turns, above which only 
the last one is visible. Post-nuclear whorls well-rounded, a little more 
abruptly so on the posterior third between the sutures. Summits very 
narrowly flattened, which renders the sutures well-marked. Periphery of 
the last whorl slightly angulated. Base slightly contracted, moderately 
rounded between the periphery and umbilical area, narrowly produced to 
re-enforce the columella. Entire surface marked by numerous, somewhat 
wavy, subequal and subequally spaced, minute, slender, spiral lirations, of 
which there are about 35 between the summit and the periphery and an 
equal number between the periphery and the base on the last turn. 
Aperture large, patulous anteriorly; posterior angle acute, outer lip thin 
at the edge, thick within; columella curved, somewhat reflected, re¬ 
enforced by the attenuated base, and provided with a strong oblique fold 
at its insertion. Length, 6.1; diameter, 3.3 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 15521c. Type locality, 
Santa Barbara, California. 
Range. Known only from type locality. 
This is Odostomia inflata Carpenter, 1865, in part. 
Odostomia kadiakensis Dali and Bartsch, 1909 
Bulletin 68, United States National Museum, 197; PI. 22, fig. 9. 
Shell very regularly elongate-conic, umbilicated, yellowish-white. 
(Nuclear whorls decollated.) Post-nuclear whorls moderately rounded, 
marked by vertical lines of growth and numerous, exceedingly fine, wavy, 
spiral striations. Sutures deeply impressed. Periphery of the last whorl 
well-rounded. Base strongly inflated, marked like the spire; umbilicus 
narrow, partly covered by the strongly reflected columella. Aperture 
ovate, effuse anteriorly, posterior angle acute; outer lip thin; columella 
thin, very oblique, strongly curved anteriorly and decidedly reflected, 
provided with a weak fold a little anterior to its insertion. Length, 5.2; 
diameter, 2.7 mm. (Dali and Bartsch.) 
Iype in United States National Museum, No. 159470. Type locality, 
Kadiak Island, Alaska. 
Range. Known only from type locality. 
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