Parietes and basis permeated by pores. Radii not permeated by pores

Parietes ribbed, mottled purplish-red; orifice broad, trigonal, hardly toothed. Scutum thick, with from one to six longitudinal rows of little pits. Tergumwithout a longitudinal furrow; spur truncated, fully one-third of width ofvalve.