NO. 1903. WEST AMERICAN PYRAMIDELLID M0LLU8KS—BARTSCH. 283 



ODOSTOMIA (EVALEA) BARKLEYENSIS Dall and Bartsch. 



Plate 38, fig. 9. 



Odostomia (Evalea) barkleyensis Dall aud Bartsch, Dep. Mines, Geol. Surv., 

 Canada, 1910, p. 19, pi. 2, fig. 8. 



Shell, small, regularly conic, bluish- white. Nuclear whorls deeply, 

 obliquely immersed in the first of the succeeding turns, above which 

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

 slightly rounded, marked by fine retractive lines of growth and numer- 

 ous fine, spiral striations. Sutures strongly impressed. Periphery 

 of the last whorl subangulated. Base rather short, sloping from the 

 subangulated periphery to its anterior margin, with a tumid area 

 bounding the narrow umbihcus, marked like the spire. Aperture 

 oval; posterior angle acute; outer lip thin; inner lip decidedly curved 

 and reflected, provided with a strong oblique fold at its insertion; 

 parietal wall glazed with a moderately thick callus. 



Specimens of this species were dredged in 18 to 28 fathoms in 

 Barkley Sound, Vancouver Island, British Columbia. Part of them 

 are in the Geological Survey Museum collection at Ottawa, and 

 others in the United States National Museum, Cat. No. 211543. 

 The specimen figured has 5| post-nuclear whorls, and measures: 

 Length, 3.1 mm.; diameter, 1.4 mm. 



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



ODOSTOMIA (EVALEA) COOKEANA Bartsch. 

 Plate 37, fig. 8. 

 Odostomia (Evalea) cooheana, Bartsch, Nautilus, vol. 23, 1910, p. 138, pi. 11, fig. 4. 



Shell elongate-ovate, very narrowly umbihcated, yellowish-white. 

 Nuclear whorls very obliquely immersed in the first of the succeeding 

 turns. Post-nuclear whorls very liigh between the sutures where they 

 are very moderately rounded and marked by rather strong incremental 

 lines and very numerous fine spiral striations. Periphery and base 

 of the last whorl somewhat inflated, the latter strongly rounded and 

 marked like the spire. Aperture large, oval; posterior angle acute; 

 outer lip thin; inner lip decidedly oblique, quite strongly curved in 

 the middle and somewhat reflected, provided with an oblique fold, 

 at its insertion, which is strong within and tapers to a vanisliing point 

 at the free edge of the columella; parietal wall glazed with a thin 

 callus. 



Two specimens of this species were collected by Doctor Baker at 

 Ellamar, Alaska. One of these, an immature specimen, furnished 

 our description of the nucleus, the other, Cat. No. 208427, U.S.N.M., 

 gave the adult characters. The adult specimen has its nucleus badly 

 eroded. The four remaining whorls measure: Length, 3.2 mm.; 



