214 BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



umella slender, very strongly curved, very oblique, provided with a 

 deep seated fold at its insertion; parietal wall covered with a thin 

 callus. 



The type (Cat. no. 206922, U.S.N.M.) and seven specimens were 

 dredged at U. S. Bureau of Fisheries, station 2936, in 359 fathoms, 

 temperature 49°, off San Diego, California. It has five post-nuclear 

 whorls and measures: Length 3.6 mm., diameter 1.7 mm. 



ODOSTOMIA (EVALEA) ALTINA, new species. 

 Plate 25, fig. 2. 



Shell ovate, 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 well rounded, feebly 

 contracted at the suture, appressed at the summit. Suture slightly 

 impressed. Periphery obscurely angulated. Base well rounded. 

 Entire surface marked by slightly retractive lines of growth and 

 exceedingly line spiral striations. Aperture ovate, posterior angle 

 acute; outer lip thin; columella strongly curved, decidedly revolute, 

 provided with a strong fold at its insertion. 



The type (Cat. no. 206923, U.S.N.M.) and two additional speci- 

 mens were dredged at U. S. Bureau of Fisheries, station 2936, in 359 

 fathoms, temperature 49°, off San Diego, California. The type has 

 five post-nuclear whorls and measures: Length 3 mm., diameter 

 1.5 mm. 



ODOSTOMIA (EVALEAj PROFUNDICOLA, new species. 



Plate 25, fig. 8. 



Shell tiirrited, milk-white. Nuclear wdiorls deeply obliquely 

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

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

 erately rounded, slightly contracted at the sutures, broadly tabu- 

 lately shouldered at the summit. Periphery and base of the last 

 whorl somewhat inflated, strongly rounded. Entire surface of spire 

 and base marked by numerous vertical lines of growth and exceed- 

 ingly fine microscopic, closely spaced, spiral striations. Aperture 

 very large, ovate; posterior angle obtuse; outer lip thin; columella 

 slender, somewhat twisted, oblique, slightly revolute, provided with 

 a deep-seated fold. 



The type (Cat. no. 206924, U.S.N.M.) and eight specimens were 

 dredged at U, S. Bureau of Fisheries, station 2936, in 359 fathoms, 

 temperature 49°, off San Diego, California. The type has six post- 

 nuclear whorls and measures: Length 4.5 mm., diameter 2 mm. 

 The University of California has a specimen dredged at station 13, off 

 Point Vincente. 



