Genus: Test chitinous, coloured greyish-rose or deep purple, nearly allways rough with
adhering sand-grains; pseudostome narrow, elliptic, notched in lateral view,
frontal view of pseudostome more or less convex or truncated, with rounded corners;
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Species:
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