Genus: Euglenas in a close fitting lorica; a single long flagellum extends through small opening; lorica with or without short collar; yellow to brown (How to know the protozoa, 1979). Lorica often possesses numerous spines, composed of ferric hydroxide impregnated with brown manganic compound (Kudo, 1966).
Species: Lorica smooth, broad ellipsoidal, both ends rounded, 18-24 μm long, 15-17 μm wide, collar curved, relatively long, about 4 μm high (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

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T. playfairi 31 x 20 μm near Town Hall Shobu Saitama, 2004	T. playfairi 26 x 24 μm Jizoh-bori Sannoh Park Saitama, 2005	T. playfairi lorica 22 μm posterior rounded Japan, 1998 Movies	T. playfairi 21 x 17 μm Ichikawa Chiba, 2001
T. playfairi ? or T. similis ? lorica 27 x 20 μm posterior rounded Uruguay, 1999	T. playfairi ? 25 x 15.5 μm Mihashi Park Saitama, 2002	T. playfairi ? or T. hexangulata ? lorica 41 x 23 μm posterior tapered Uruguay, 1999	T. playfairi lorica 22 x 18 μm water reservoir near Yamaguchi Univ. Yamaguchi, 2004
T. playfairi lorica 22 x 18 μm Hanasaki water park Kazo Saitama, 2005

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