Spumella (Monas) uniguttata Skuja, 1939. Cells 7-12 microns long and 4.5-6 microns wide, metabolic, variable in shape. Cells obovate to oval, anteriorly oblique-truncated and posteriorly rounded, or round to cylindrical in a amoeboid form. Longer flagellum about 2-3 times cell length and short flagellum 1/2-1/3 times cell length. Cytoplasm hyaline. Contractile vacuole in the anterior part and nucleus in the centre.
