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Genus:
Cell body ovoid, with pre-oral suture skewed left to a point; ventrally flattened, dorsally convex
(How to know the protozoa, 1979).
With distinct postoral ? beak or unciliated field in ventral body cilia; preoral kinety complete
(Illustrated Guide, 1985).
Dorsal surface lacks bristles (cf. with bristles Trithigmostoma) ;
central zone devoid of cilia (Carey, 1992).
Species: Nineteen to twenty ventral ciliary rows; oral basket with about twelve rods (nematodesmata) and with three preoral membranes; macronucleus oval, a characteristic concentric structure; micronuleus small; body 100-300 μm long (Kudo, 1966). 130-150 μm long (How to know the protozoa, 1979). 45 μm long, numerous contractile vacuoles (Carey, 1992). |
50 μm
100 μm
150 μm; x 400
Chilodonella cucullulus, stained with azure C & fastgreen, a conjugating pair, x 400, by Y. Tsukii
50 μm
100 μm
150 μm; x 400
