Four new species from the Arctic Regions are described and some ecological data are given: Cyclopyxis leclercqi sp. nov. and Difflugiella vanhoornei sp. nov. from S. E. Greenland, Centropyxis pontigulasiformis sp. nov. and Cyphoderia perlucidus sp. nov. from Edgeøya (Svalbard). Some rare species are also discussed.