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1911 Encyclopædia Britannica/Acineta

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ACINETA (so named by C. G. Ehrenberg), a genus of suctorial Infusoria characterized by the possession of a stalk and cup-shaped sheath or theca for the body, and endogenous budding. O. Bütschli has separated off the genus Metacineta (for A. mystacina), which reproduces by direct bud-fission.