From among 15 species of Paramecium aurelia complex known in the world, five species were discovered in Poland. As a result of investigation carried out in part of the area of Zywiec Beskids in 1980, which are presented in this note,Paramecium novaurelia was only found.
E.Przybos, Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31-016 Krakow, Poland