Genus: Ectoplasm consists of large vacuoles in one or several layres; endoplasm with numerous small
vacuoles; numerous nuclei; axopodia end in the inner zone of ectoplasm (Kudo, 1966).
Species:
Actinosphaerium sp.,
cell body spherical, μm in diam.,
x 400, x 640, Higashi-hiroshima, Hiroshima Pref., Japan, October 1998, by Y. Tsukii
50 μm
100 μm
150 μm; x 400