Genus: Free-swimming; rigid oval; ventral surface convex; dorsal surface with a longitudinal groove;
flagella anterior; one long, directed anteriorly; the other shorter and trailing; fresh water
(Kudo, 1966).
Species: |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
