Genus: Test elastic, punctate; pseudostome round;
few plate-like attached particles (Illustrated Guide, 1985).
Envelope (test) thin, hyaline, changeable with body form; usually elongate-oval
with rounded posterior end; narrowed at other half; envelope finely punctated with a few small plates;
aperture round; cytoplasm clear (Kudo, 1966).
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50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
