Genus: Oral polykinetid 3 rectangular; oral area midventral (Illustrated Guide, 1985).
Cytostome right of median line in posterior half; with 3-4 caudal cilia; contractile vacuole terminal
(Kudo, 1966).
Species: Cell body 15-45 μm long; oral area in lower right quadrant of ventral surface;
body ovoid, anterior and posterior rounded (Carey, 1992).
Cinetocilum margaritaceum ?,
cell body 31 μm long, 22 μm wide,
x 640, Kaga city, Ishikawa Pref., Japan, November 2000 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cinetocilum margaritaceum Perty, 1852:
Cell body 15-45 μm long; oral area in lower right quadrant of ventral surface;
body ovoid, anterior and posterior rounded (Carey, 1992).