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