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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 ?, cell body 67 μm long, 15 μm wide, L/W=, peristome 18 μm wide, lorica μm long, μm wide, L/W=, stalk about 10 μm long, x 640, brackish water near Seaside Bitanical Garden, Himi city, Toyama Pref., Japan, August 22, 2006, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cothurnia Cothurnia Cothurnia
Cell body μm long, μm wide, L/W=, lorica μm long, μm wide, L/W=, x 640
Cothurnia Cothurnia

Images of collecting locality: Brackish water near Seaside Botanical Garden, Himi city, Toyama Pref., Japan, August 22, 2006, by Y. Tsukii

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