418 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



larly in size from the peripheral sulcus to the umbilical region. Aper- 

 ture oval; posterior angle acute; outer lip thin, showing the external 

 sculpture within; inner lip curved and somewhat revolute, adnate 

 posteriorly to the base; parietal wall glazed with a moderately thick 

 callus. 



The two specimens of this species, Cat. No. 252578, U.S.N.M., were 

 dredged at Chincoteague Bay, Virginia. One of these, the type, has 5 

 postnuclear whorls, and measure: Length, 2.2 mm.; diameter, 1 mm. 



ODOSTOMIA (CmiYSALLIDA), species? 



A specimen which we are unable to refer to any of the known 

 forms, but which is too poor to serve as type for a new species. 



ODOSTOMLA. (MENESTHO) IMPRESSA Say. 



Two specimens. 



ODOSTOMIA (EVALEA) VIRGINICA, new species. 

 Plate 13, fig. 3. 



SheU small, elongate-conic, bluish white, with a narrow pale yellow 

 band a little anterior to the summit. Nuclear whorls decidedly 

 obliquely immersed in the fii'st of the succeeding turns, above which 

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

 whorls moderately weU rounded, weakly shouldered at the summit, 

 marked by decidedly retractive lines of growth and exceedingly fine 

 spu'al striations. A slender spiral thi'ead is situated a little posterior 

 to the suture, forming a slight angulation from which the whorls bend 

 a little more abruptly to the inferior tuture. Suture strongly 

 impressed, base of the last whorl moderately long, somewhat inflated, 

 strongly rounded and openly umbilicated. Aperture oval; posterior 

 angle obtuse; outer lip thin; inner lip decidedly oblique, curved and 

 somewhat revolute; parietal wall glazed with a tliin callus. 



The type and 4 specimens were chedged at Chincoteague, Virginia. 



The type, Cat. No. 252576, U.S.N.M., has 6 post-nuclear whorls 

 and measures: Length, 2.7 mm.; diameter, 1.2 mm. 



ODOSTOMIA (EVALEA) POCAHONTASAE, new species. 

 Plate 13, fig. 6. 



Shell small, quite regularly conic, semitranslucent, bluish white, 

 with a narrow pale yellow band a little anterior to the summit. 

 Nuclear whorls obliquely immersed in the fii'st of the succeeding 

 turns, above which the titled edge of the last volution only projects. 

 Post-nuclear whorls flattened, feebly shouldered at the summit, the 

 sides of the succeeding turns forming a perfectly straight line, marked 

 by exceedingly fine protractive lines of growth, and microscopic spiral 

 striations only. Suture rendered slightly channeled by the weak 

 shoulder at the summit of the whorls. Periphery of the last whorl 

 decidedly angulated. Base short, weU rounded, narrowly umbili- 

 cated, marked by lines of gi-owth and fine spu-al striations. Aperture 



