 
 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400 :
 150 μm; x 400 : 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
Actinobolina vorax: 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).