Shell small, rostrate, subdiscoiclal, spire sunk, base widely excavate, thin and translucent. Whorls three and a half, separated by a deeply channelled suture, rapidly increasing, last keeled. Parallel to the suture, along the periphery and around the umbilicus run three solid opaque ridges; from the sutural band to the periphery and from that again to the umbilical border, radiate a dozen connecting bars. This sculpture may be otherwise expressed as a dozen tongue-shaped Spaces excavated out of the substance of the shell above and below the periphery; the hollows translucent, the elevations opaque Crossing ridges and furrows alike are minute, close lines, which on higher magnification resolve themselves into strings of oval pearls. Base wide and deeply excavate. Aperture oblique externally thickened all round. At the junction of the periphery, the lip is produced into a heavy projecting knob which furnishes an excellent recognition mark to the species. Major diameter 2,72, minor diameter 1,92, height 1,2 mm.
Location: Thursday Island, Queensland; several examples collected bv Mr. J. Brazier.