(formerly) Unknown protists
Family & Genus: Body ovoid; tentacle-like processes contain toxicysts (Illustrated Guide, 1985).
Cell body ovate or spherical; ciliation uniform; extensible tentacles present among cilia;
contractile vacuole posterior; macronucleus curved band; fresh water (Kudo, 1966).
100-200 μm long; cell body ovoid, pale yellowish brown;
cytostome anterior with short collar; about 30 rows of cilia and tentacles; tentaciles not knobbed;
fresh water (How to know the protozoa, 1979).
Actinobolina vorax (?), cell body spherical in shape, covered with very long tentacle-like structures which are retracted at swimming,
and also with very long "cilia" or "flagella" ?, termini of the "tentacles" are thickened,
cytoplasm vacuolated, cytoplasmic streaming conspicuous,
this might belong to Actinobolina
(especially, Actinobolina vorax),
x 400, x 640, from USA 1998.7, DV images by Y. Tsukii
150 um; x 400 :
94 um; x 640
# The same organism was also found here in Japan (VHS movie: H. Tanaka, personal communication).
Please click on images for viewing enlarged.
Protist Information Server