Species: 70-120 μm long,
12-16 μm wide; elongate;
three-ridged, rounded anteriorly and drawn out posteriorly;
pellicle longitudinally striated; discoid chloroplasts numerous; two
rod-shaped paramylon (paramylum) bodies (Kudo, 1966).
90-100 μm long;
body twisted, with three longitudinal ridges (How to know the protozoa, 1979).
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