194 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Odostomia herilda Dali and Bartsch, 1909 
Plate 63, fig. 8 
Bulletin 68, United States National Museum, 197; PI. 23, fig. 8. 
Shell elongate-conic, light yellow. Nuclear whorls deeply obliquely 
immersed in the first of the succeeding turns. Post-nuclear whorls cylin- 
dric in outline, moderately rounded in the middle and very much so at 
the very strongly shouldered summit. Sutures well-impressed. Periphery 
short, base of the last whorl well-rounded, the latter narrowly umbilicated. 
Entire surface of spire and base marked by numerous vertical lines of 
growth and exceedingly fine, closely spaced, wavy, spiral striations. Aper¬ 
ture ovate, posterior angle obtuse; outer lip thin; columella slender, some¬ 
what sinuous, slightly reflected, provided with a deep-seated fold a little 
anterior to its insertion; parietal wall glazed with a thin callus. Length, 
3.8; diameter, 1.8 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 206910. Type locality, 
off San Diego, California. 
Range. Known only from type locality. 
Odostomia hypatia Dali and Bartsch, 1912 
Plate 61, fig. 5 
Proceedings of the United States National Museum, 42:282; PI. 37, fig. 5. 
Shell large, elongate-ovate, strongly umbilicated, yellowish-white. 
Nuclear whorls deeply immersed in the first of the succeeding turns, above 
which the tilted edge of the last volution only projects. Post-nuclear 
whorls well-rounded, feebly shouldered at the summit, marked by fine 
incremental lines, and numerous, exceedingly fine, closely spaced, spiral 
striations. Sutures moderately constricted. Periphery of the last whorl 
inflated, well-rounded. Base moderately long, well-rounded, openly um¬ 
bilicated. Aperture oval, effuse anteriorly; posterior angle obtuse; outer 
lip thin; inner lip very oblique, slender, curved, and decidedly reflected, but 
not appressed to the base, provided with a moderately strong fold a little 
anterior to its insertion; parietal wall glazed with a thin callus. Length, 
5.2; diameter, 2.8 mm. (Dali and Bartsch.) 
Type in Geological Survey Museum, Canada. Type locality, Skidegate, 
Queen Charlotte Islands, British Columbia. 
Range. Known only from type locality. 
[4921 
