8. Odostomia (s. str.) denselirata, n. sp. Plate XXVIII, fig. 9.

Shell minute, elongately oval, thin, semitransparent, slightly shining, imperforate. Sculpture: The protoconch and the succeeding whorl smooth, the others microscopically, densely, and distinctly spirally striate; growth-lines fine, vertical, and somewhat flexuous. Colour white. Spire conical, very little higher than the aperture; outlines moderately convex. Protoconch heterostrophe, of 2 whorls, smooth, polished, convex, nucleus lateral. Whorls 5, regularly increasing, flatly convex; base flat. Suture impressed. Aperture subvertical, ovate, high, angled above, narrowed and produced below. Outer lip regularly convex, thin and sharp. Columella vertical, arcuate, with a small plait above; inner lip extending very little beyond the pillar, but broadening towards the base.

Diameter, 1.25 mm.; height, 2.5 mm.

Type in my collection.