1911 Encyclopædia Britannica/Acineta

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.