Shell small, translucent, bluish white. Nuclear whorls one and a half, well rounded, smooth. Postnuclear turns one and a half, well rounded, ornamented with many decidedly retractive axial riblets which are stronger and more distantly spaced on the first turn than on the succeeding. These riblets are about one-third as wide as the spaces that separate them on the first turn, while on the last turn the intercostal spaces are only a trifle wider than the riblets. The spaces between the riblets are crossed by numerous, very fine spiral striations. Base gradually, deeply umbilicated. The umbilicus marked at its outer edge by a strong carina. The entire surface of the base is marked by the continuation of the axial riblets, which pass undiminished over the base, into the umbilicus. The base appears slightly excavated immediately posterior to this carina. The exterior umbilical wall is concave and marked by the continuation of the axial riblets from aperture; outer lip thickened at the edge; inner lip sin-nous, slightly reflected, and continuing over the parietal wall, rendering the peritreme complete.
The type, Cat. No. 249769, T.S.N.M., comes from Port Alfred (Coll. No. 1041). It measures: Altitude, 3 mm. The greatest meas¬urement obtainable while lying on the aperture is 3 mm. Another specimen, Cat. No. 250534, ILS.N.M. (Coll. No. 1407), comes from the same place.