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Oligohymenophorea: Peritrichia: Vaginicolidae

 Cothurnia annulata
Stokes

Cothurnia annulata 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 Stokes ?, lorica μm long, μm wide, L/W=, cell body about 90 μm long, 13 μm wide, L/W=6.9, peristome 20 μm wide, P/W=1.5, x 640, Futayo-no-ike (pond) near Haguro mountain, Haguro town, Yamagata Pref., Japan, July 10, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cothurnia Cothurnia

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