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:
Cinetochilum sp. (or Kreyella ?),
cell body 18 μm long, 14 μm wide,
x 400, x 640, Tega-numa (Lake), Abiko city, Chiba Pref., Japan, October 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).