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Litostomatea: Haptoria: Haptorida: Spathidiidae

 Spathidium sp.
Dujardin, 1841

Spathidium Genus: Body long to ovoid; apex fan-shaped; txicysts evenly distributed along edge of apex (Illustrated Guide, 1985). Body elongate, circular in cross section; antrerior obliquely truncated, surmounted by an unciliated apical ridge, which is lined with trichocysts; cytostome slit-like (Carey, 1992). Very many species (Corliss, 1979).
Species:

Spathidium sp. ?, cell body 330 μm long, 190 μm wide, L/W=, x 100, x 200, No.1, Kejo-numa, Furukawa-Ono, Osaki city (formerly Furukawa city), Miyagi Pref., Japan, October 29, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
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Cell body 330 μm long, 220 μm wide, L/W=, x 100, x 200, x 400
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