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Oligohymenophorea: Peritrichia: Vaginicolidae

 Cothurnia annulata
Stokes

Cothurnia Genus (Ehrenberg, 1831): Lorica attached aborally by stalk; no operculum (Illustrated Guide, 1985). Similar to Vaginicola, but lorica stands on a short stalk; fresh or salt water (Kudo, 1966).
Species: Lorica about 55 μm high; fresh water (Kudo, 1966). Middle of cell body, a ring-like elevation.
Similar Genus ->> Thuricola; Vaginicola; Pyxicola; Platycola

Cothurnia annulata, a single cell in a lorica (on a stalk, slightly wider at base), cell body 75 μm long when extended, 10 μm wide, peristome 18 μm in diam., a ring-like elevation at the middle of cell body, lorica 50 μm long, 20 μm wide, x 400, x 640, Numanobe, Yamagata city, Yamagata Pref., Japan, October 1999, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Cothurnia Cothurnia Cothurnia
Cothurnia Cothurnia Cothurnia

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