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Oligohymenophorea: Hymenostomatia: Scuticociliatida: Pleuronematina: Histiobalantiidae

 Histiobalantium natans
(Claparède & lauterborn, 1858)
Syn. H. agile Stokes, 1886; Pleuronema inflatum Lauterborn, 1915?

Histiobalantium Genus: Ovoid; ciliation uniform; long stiff cilia (bristles) distributed over the body surface; peristome deep, both anterior and posterior regions with a well-developed membranes connected with undulating membrane (velum); two macronucleus; 1-2 micronuclei; several contractile vacuoles; fresh water (Kudo, 1966).
Species:

Histiobalantium natans (or H. marinum or a similar species), cell body μm long, μm wide, L/W=, x 640, Kareki-numa marsh, Nikko city (formerly Fujiwara town), Tochigi Pref., Japan, August 2, 2008, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Histiobalantium natans Histiobalantium natans Histiobalantium natans Histiobalantium natans

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