Bodo (Boe-dough) curvifilus Griessmann, 1913. Cell outline is oval or bean-shaped. The cells are 5 to 8 microns long, flattened, and pliable. The two flagella are unequal in length and insert subapically and to one side in a small pocket. The anterior flagellum is as long as the cell, is curved and beats slowly with a paddling motion. The trailing posterior flagellum is acronematic and is about 2.5 to 3 times the length of the cell. Cells normally glide but may have a squirming movement. Often observed.