 Pelomyxa

Pelomyxa is a genus of giant flagellar amoebae, usually 500-800 μm but occasionally up to 5 mm in length, found in anaerobic or microaerobic bottom sediments of stagnant freshwater ponds or slow-moving streams.The genus was created by R. Greeff, in 1874, with "Pelomyxa palustris" as its type species.