In the water bodies in the region of the Orawa Valley (Carpathians) new habitats of Paramecium biaurelia and P. novaurelia were found. The species are the most common also in the other studied parts of the Carpathians as well as in the whole Poland.
E.Przybos, Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31-016 Krakow, Poland