212 BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



sutures, and very narrov. ly ta'.ulately sliouklered at the summit. 

 The spiral thread at the periphery and the narrow tabulated summits, 

 which fall a little anterior to this, render the suture narrowly chan- 

 neled. Periphery of the last whorl marked by a slender raised thread. 

 Base short, well rounded, impressed at the um])ilical area. Entire 

 surface of s])ire and base marked by slightl}^ protractive lines of 

 growth and many very fine, closely spaced spiral striations. Aper- 

 ture rhomboidal, posterior angle obtuse; outer lip thin: columella 

 slender, curved, slightly revolute, provided with a strong fold at its 

 insertion. 



The tyj^e (Cat. no. 206918, U.S.N.M.) and five specimens come 

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

 and measures: Length 3.1 mm., diameter 1.3 mm. Two additional 

 specimens (Cat. no. 206919, U.S.N.M.) come from San Hipolito Point, 

 Lower California, and three more (Cat. no. 105484, U.S.N.M.) from 

 Point Abreojos, Lower California. 



ODOSTOMIA (EVALEA) RAYMONDI, new species. 

 Plate 25, fig. 9. 



Shell regularly conic, milk-white. Nuclear whorls very obliquely 

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

 only the tilted edge of the last volution projects, which gives the spire 

 a decidedly truncated aspect. Post-nuclear whorls well rounded, 

 slightly shouldered at the summit, marked by a raised spiral thread 

 at the decidedly angulateci periphery. The summits of the whorls fall 

 a little anterior to the periphery, and cause the sutures to appear 

 subchanneled. Base short, well rounded. Entire surface of base 

 and spire marked by strongly retractive lines of growth and numerous 

 closely spaced spiral striations. Aperture oval ; posterior angle acute ; 

 outer lip thin; columella curved, reflected, reenforced by the l)ase 

 and provided with a moderately strong fold at its insertion. 



The type (Cat. no. 206920, U.S.N.M.) was dredged by the Uni- 

 versity of California, at station 30, off Catalina Island. It has six 

 post-nuclear w^horls and measures: Length 3.6 mm., diameter 1.6 

 mm. A topotype is in the University of California collection. 



This species resembles Odostomia (Eralea) minutissima, but is much 

 broader with a stronger peripheral keel and with an oval insteatl of 

 rhomboidal aperture. 



Named for Prof. William J. Raymond. 



ODOSTOMIA (EVALEA) GRAVIDA Gould. 

 Plate 25, fig. 7. 

 Odostomia gravida iiovLV, Proc Bosi. Soc. Nat. Hitst., vol. (i, 1852, p. 37(3. 



Shell large, broadly conic, milk-white, shining. 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 



