Test wall moderately thick, multilamellar, finely perforate, wall pores variably spaced in adult chambers, surface moderately to coarsely muricate or pustulose, never with a keel, raised sutures or imperforate peripheral margin. Test small to moderate in size, coiled in a very low to low trochospire, spiral side evolute, umbilical side mostly involute; chambers globular, never elongated radially, increasing slowly to moderately in size, with 4.5-7 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch that is bordered by a thick lip or flap that may extend partly into the umbilical region.

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