Species: Lorica cylindrical, anterior end rounded, posterior end conically tapering into a stout projection;
lateral sides nearly straight or slightly swelled; flagellum apertures with a low collar having a circle of spines;
wall covered with short spines; 36-40 μm long, 16-18.5 μm wide
(Photomicrographs of the Fresh-water Algae, vol.6, 1987).
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