CLASS GASTROPODA 
193 
a strong, oblique fold at its insertion; parietal wall glazed with a thin 
callus. (Bartsch.) 
Type in United States National Museum, No. 214431. Type locality, 
United States Bureau of Fisheries Station 5729, San Francisco Bay, 
California. 
Range. Known only from type locality. 
Odostomia gravida Gould, 1852 
Plate 60, fig. 7 
Boston Journal of Natural History, 6:384; PI. 14, fig. 14. 
T. ovato-conica, elevata, eburnea, polita; spira acuta; anfr. 6 supra 
rotundatis, ultimo subangulato, trientes duos testae adequante; apertura 
ovata, antice rotundata, postice acuta; labro expanso; plica columellari 
acuta, transversa, umbilico parvo suffossa. (Gould.) 
Shell small, ovate conic, elevated, ivory-white, polished; whorls six, 
abruptly rounded above, rather flattened at the middle, the last whorl two- 
thirds the length of the shell; slightly angular at periphery; suture delicate. 
Aperture ovate, rounded at base; lip slightly everted, with a constriction 
behind it; spiral fold on the columella nearly transverse, elevated, sharp- 
edged, and a small umbilical opening is seen running under it. Length, 
one-fourth of an inch; diameter, one-tenth of an inch. (Gould.) 
Type in State Museum, Albany, New York, No. 44. Type locality, 
Santa Barbara, California. 
Range. Known only from type locality. 
Odostomia hagemeisteri Dali and Bartsch, 1909 
Bulletin 68, United States National Museum, 216; Pi. 26, fig. 1. 
Shell small, elongate-oval, yellowish-white. Nuclear whorls small, 
almost completely immersed in the first of the succeeding turns. Post- 
nuclear whorls moderately well-rounded, with rounded summits, marked 
by retractive lines of growth and many, fine, closely spaced, spiral stria- 
tions. Suture well-impressed. Periphery of last whorl well-rounded. 
Base well-rounded, marked like the spire. Aperture ovate, posterior angle 
acute; outer lip thick within, thin at the edge; columella very short, very 
strongly curved, somewhat revolute, re-enforced by the attenuated base 
and provided with a strong fold at its insertion. Length, 4.4; diameter, 
2.4 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 159469. Type locality, 
Hagemeister Island, Bering Sea. 
Range. Known only from type locality. 
[4911 
