Genus: Genus: Outer mucilaginous envelope with minute colorless spherical granules arranged in concentric layers; nucleus eccentric; pseudopodia long (Kudo, 1966). Species:

31 μm 63 μm 94 μm; x 640

C. sterni: Body spheroid 12-25 μm diam., with getatinous coat 8 μm thick; axopods extend from central granule (centroplast), each 40 μm long, slender, with rafractile granules along them (Illustrated Guide, 1985).