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Prostomatea: Prostomatida: Metacystidae

Vasicola sp.
Tatem, 1869

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., in lorica, More than 50 μm long when extended, 7 μm wide, Japan, November 1998 by Y. Tsukii

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