Genus: When extended, trumpet-shaped or cylindrical; highly contractile; some with
mucilaginous lorica; conspicuous peristomal field frontal; contractile vacuole anterior-left; fresh water
(Kudo, 1966).
Species: Rose-colored or colorless; 200-400 μm
long; macronucleus oval; ciliation uniform (Kudo, 1966).
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