Genus: Cell body ovoid or ellipsoid; cytostome about 1/4 the body length, near anterior end, elliposoid, with inconspicuous undulating membrane on right and three membranellae on left; ciliation uniform; 30-40 ciliary rows; macronucleus rounded; a single micronucleus; a contractile vacuole; fresh water (Kudo, 1966). Long axis of opening to oral cavity and polykinetids at ~45 degree angle to long axis of body (Illustrated Guide, 1985).

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G. scintillans 50 x 34 μm Japan, 1998	G. scintillans 41-59 x 28-45 μm cytostome 12 μm Saitama, 1999	G. scintillans cysts 19 μm φ Saitama, 1999	G. scintillans 35 x 20 μm cytostome 11 μm Tochigi, 1999
G. scintillans cell 52 x 30 μm cytostome 12 μm cyst 13 μm φ Saitama, 1999	G. scintillans cell 52 x 33 μm cytostome μm Furu-tone river Kasukabe Saitama, 2004	Glaucoma sp. μm cytostome μm Tango-seki p. Chuoh-ku Chiba, 2008
Glaucoma sp.2 or 1 scintillans ? 35-43 x 23-29 μm cytostome 9 μm Japan, 1998	Glaucoma scintillans 30-50 x 16-30 μm cytostome 9 μm Gyoda Saitama, 2001	Glaucoma sp. 49-53 x 21-24 μm cytostome 9 μm Sendabori Chiba, 2002	Glaucoma ? or Colpidium ? 25 μm Japan, 1997

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