Discoidal test, central part of the test is inflated, one to two rows of apertures are aligned in a median groove. The test surface is ornamented with longitudinal stria. Living specimens have a distinct purple colour due to rhodophycean symbionts.
Compressed test with involute and planispirally enrolled chambers in an early stage. Longitudinal stria as surface ornaments, apertures are arranged in a series of pores. As in all Peneroplidae, chambers have no internal subdivisions and rhodophyceans are housed as endosymbionts.