282 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



The type (Cat. No. 211555, U.S.N.M.) was obtained by Mrs. Old- 

 royd in deep water at San Pedro, California. It has 5 post-nuclear 

 whorls and measures: Length, 3.1 mm.; diameter, 1.6 mm. 



This species follows Odostomia (Evalea) quadrse in the key. 



ODOSTOMIA (EVALEA) CYPRIA Dall and Bartsch. 

 Plate 37, fig. 9. 



Shell of medium size, narrowly elongate-ovate, umbilicated, yel- 

 lowish-white. (Nuclear whorls decollated.) Post-nuclear whorls 

 rather high between the sutures, moderately rounded, very feebly 

 shouldered at the summit, marked by fine lines of growth and nuriier- 

 ous exceedingly fine, closely-spaced, spiral striations. Sutures very 

 slightly constricted. Periphery of the last whorl very rounded. 

 Base moderately long, well rounded, narrowly umbilicated. Aper- 

 ture broadly oval, effuse anteriorly; posterior angle obtuse; outer lip 

 thin ; inner lip very oblique, sHghtly curved and revolute, not appressed 

 to the base, provided with a very deep-seated feeble fold at its inser- 

 tion; parietal wall covered mth a thick callus, wliich renders the 

 peritreme complete. 



The unique type, which was dredged by ^ir. Spreadborough at 

 Skidegate, is in the collection of the Geological Survey of Canada. 

 It has 5 post-nuclear whorls and measures: Length, 4 mm.; diame- 

 ter, 2 mm. 



This species foUows Odostomia (Evalea) Jierilda in the key. 



ODOSTOMIA (EVALEA) HYPATIA Dall and Bartsch. 

 Plate 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, 

 closel}^ spaced, spiral striations. Sutures moderately constricted. 

 Periphery of the last whorl inflated, well rounded. Base moderately 

 long, well rounded, openly umbilicated. Aperture oval, effuse 

 anteriorly; posterior angle obtuse; outer Up thin; inner lip very 

 obHque, 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. 



The unique type of this species, which is in the collection of the 

 Geological Survey of Canada, was dredged by Mr. Spreadborough at 

 Skidegate. It has 6 post-nuclear whorls and measures: Length, 5.2 

 mm.; diameter, 2.8 mm. 



This species foUows Odostomia (Evalea) cypria in the key. 



