|  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 elongated ovoid or elliptical; cytopharynx conspicuous; three rows of ejectisome (trichocysts) 
(Yamagishi, 1999). Species:
 
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