Family: Small, less than 50 μm;
oblong to ovate; ridges faint or absent.
Genus: Body ovate in locomotion; longer than broad; with more or less thick clear zone
around granular mass; uninucleate (Illustrated Guide, 1985).
Species: Ovoid, no or few, faint dorsal ridges; thick, clear ectoplasm; vesicular nucleus
(How to know the protozoa, 1979).
Locomotive, 25-35 μm long,
15-30 μm wide, pseudopod none,
uroid none, ectoplasm smooth,
nucleus spherical, 5-6 μm,
contractile vacuole 6-8 μm
(Illustrated Guide, 1985).
Clear ectoplasm anterior half of cell body.
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