228 BULLETIN 08, UNITED STATES NATIONAL MUSEUM. 



ODOSTOMIA (AMAURA) CANFIELDI Dall. 



Plate 28, fi,<r. 2. 



Odostomia (Amaura) canjlcldi Dall, Nautilus, vol. 31, 1908, p. 131. =Odostomia 

 (Amaura) viontereyensis Dall and Bartsch, Proc. U. S. Nat. Mus., vol. 

 33, 1907, p. 531, pi. 48, figs. 6, 6«; not Odostomia {Chrysallida) viontereyensis 

 Dall and Bartsch, Proc. U. S. Nat. Mus., vol. 33, 1907, p. 516, pi. 46, fig. 4. 



Shell large, similar in form to 0. (A.) avellana; white, shining. 

 Nuclear whorls 3, helicoid, quite elevated, deeply immersed in the first 

 of the succeeding whorls, having their axis at a right angle to the axis 

 of the later wdiorls. Post-nuclear whorls well rounded, with a beveled 

 shoulder at the summits. Suture well marked, simple. Periphery 

 and base of the last whorl well rounded and inflated, the latter some- 

 what elongated. Aperture subovate, somewhat efi'use anteriorly; 

 posterior angle acute; outer lip thin at the edge, thick within; colu- 

 mella curved and somewhat revolute, having a prominent oblique fold 

 near its insertion; parietal wall covered by a thin callus. 



The type (Cat. no. 46473, U.S.N.M.) is from Monterey, California. 

 It has six post-nuclear whorls which measure: Length 9.6 mm., diam- 

 eter 5.1 mm. 



In addition to these, others have been named for the University of 

 California from Monterey; for Mr. S. S. Berry from 12 fathoms off 

 Del ]\Ionte, Monterey Bay; for Mrs. Oldroyd from San Pedro, and 

 for ]\lr. Kelsey from San Diego, California. 



This species resembles 0. (A.) avellana Carpenter, but differs 

 markedly from that form by having the summits of the whorls 

 shouldered. 



ODOSTOMIA (AMAURA; SUBTURRITA, new species. 



Plate 28, fig. 4. 



Shell ovate, light yellow. Nuclear whorls small, deeply obliquely 

 immersed in the first of the succeeding turns, above which onl}^ the 

 tilted edge of the last volution projects. Post-nuclear whorls 

 flattened, scarcely at all contracted at the sutures, with a very broad 

 tabulate summit, crossed by numerous spiral striations, which are 

 a little darker colored than the general surface of the shell. Periphery 

 and base of the last whorl somewhat inflated, well rounded, marked 

 like the space between the sutures. Aperture large, oblong-ovate, 

 slightly eftuse anteriorl}^; posterior angle very obtuse; outer lip 

 thick within, thin at the edge; columella curved, somewhat twisted, 

 strongly reflected, provided with a strong fold a little anterior to its 

 insertion. 



The type (Cat. no. 168801, U.S.N.M.) and nine specimens come 

 from San Pedro, California. The type has six post-nuclear whorls 

 and measures: Length 6.9 mm., diameter 3.5 mm. 



