Shell small, while, exceedingly delicate. The nucleus consisting of a little more than one whorl, the coil resting on the left side of the postnuclear portion of the shell. The postnuclear part of the shell increases very rapidly in size, the sides being marked by about 40 thread-like radial riblets which are a little more densely spaced on the anterior portion. These are crossed almost at right angles by a second series of raised threads which equal the first in strength and spacing, thus lending the surface a finely reticulated aspect. The plug filling the notch is transversely notched. The shell is so thin that all the external markings are seen within.
The type, Cat. No. 187135, U.S.N.M., comes from Port Alfred (Coll. No. 681). It measures: Altitude, 1.1 mm.; long diameter, 1.9 mm.; transverse diameter, 1.3 mm.