portrait

Description:

Anisonema (a-nice-o-neme-a), a genus of heterotrophic euglenids commonly found in marine sediments. With one flagellum sweeping from side to side in front of the cell, and with a second flagellum following a curve and then trailing behind the cell. Periodically the cells jerk backwards. Body not metabolic, no mouth visible by light microscopy. This species is A. trepidum, distinguished by occasionally arresting its forward movement. Differential Interference Contrast.