6. Odostomia (s. str.) taumakiensis, n. sp. Plate XXVIII. fig. 7.

Shell very small, elongately ovate, imperforate, smooth and polished, thin, translucent. Sculpture consisting occasionally of a few microscopic indistinct spiral striæ on the body-whorl, but very often absent; growth-lines fine, oblique. Colour white. Spire elevated-conic, about 1 ½ times the height of the aperture; outlines somewhat convex. Protoconch minute, heterostrophe, but slightly tilted, of 1 smooth whorl, globular. Whorls 5, regularly increasing, lightly convex; base flatly rounded. Suture impressed, margined below by a rather broad band. Aperture subvertical, oval, angled above, rounded and effuse below. Outer lip thin and sharp. Columella slightly oblique, arcuate, with a deeply situated and not very prominent plait above; inner lip but slightly expanded, forming a very thin and shining layer on the parietal wall.

Diameter, 1.5 mm.; height, 3.2 mm.

Type in my collection.

Hab.—Near Taumaki Island, west coast of the South Island, in 10 fathoms, type; near the Snares and Bounty Islands, in 50 fathoms (Captain Bollons).