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).

T. armata or var. longispina ? 3 clips 40 μm Japan, 1998	T. playfairii 1 clip lorica 22 μm posterior rounded Japan, 1998	Trachelomonas sp. 2 clips lorica cylindrical 32 x 12 μm Japan, 1998
T. raciborski 1 clip lorica 28 μm Japan, 1998	T. volvocina var. derephora ? 1 clip with collar 24-20 μm φ Japan, 1998

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