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:
Notosolenus sp. ??,
cell body 5.5 μm long, 3.5 μm wide, flagellum 8.5 μm long,
x 640, Japan, 1998 by Y. Tsukii
31 μm
63 μm
94 μm; x 640