Genus: Usually limax-like, commonly with villous-bulb uroid; locomotion by steady flow with occasional slight antero-lateral bulging; floating form with long, blunt, mostly granular pseudopodia; normally uninucleate (Page, 1976). Pseudopods do not meld at bases during locomotion; pseudopods not ridged; nucleus spherical (Illustrated Guide, 1985). Species:

31 μm 63 μm 94 μm; x 640

Images of collecting locality: No. 1, Iyari marsh, Omachi city, Nagano Pref., Japan, June 1, 2008 by Y. Tsukii