Genus: Elliptical body with a firm pellicle; dorsal side convex, ventral side slightly flat; "cytopharynx" with granules; two lateral chromatophores (chloroplasts) vary in color from green to blue-green, brown or rarely red; 1-3 contractile vacuoles anterior (Kudo, 1966). Cell body cylindrical or elongated ovoid; cytopharynx inconspicuous, two rows of ejectisomes (formerly trichocysts) (Yamagishi, 1999). Species:

Similar genus -->> Cryptomonas; Chilomonas;

31 μm 63 μm 94 μm; x 640