Ploeotia (plee-owe-sha) a gliding heterotrophic euglenid. One flagellum projects anteriorly and beats with an undulating motion, the posterior flagellum is thickened and trails. The cells are rigid, usually flattened and have a well-developed ingestion apparatus seen here at the front of the cell. This species usually called Entosiphon ovatum, but unlike species of Entosiphon, the ingestion apparatus cannot move in and out. Differential interference contrast.