Order: No kinetidal specializations at oral region.
Family (Kahl 1926): Cytostome terminal; ciliation uniform; usually encased in a pseudochitinous lorica (Kudo, 1966).
Genus: Ovoid with caudal cilia; lorica flask-shape, ringed; cytostome with four rows of long cilia; body surface with shorter cilia; macronucleus round (Kudo, 1966). Large protruding vacuole absent (Carey, 1992).

Vasicola sp. 3 clips 50 x 7 μm Japan, 1998

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