Abstract
Halicyclops sinensis, known from China, and Paracyclops poppei are recorded for the first time from Japan. Halicyclops japonicus, known only from a small island on the Sea of Japan, and Bryocamptus laccophilus, known from Europe and Erimo, Hokkaido, are reported from Yakushima Island. Ochridacyclops sp., known from Kyusyu, is reported from Shikoku and Hokkaido. Some illustrations for help in diagnosis of these species and a discussion of their distribution are presented.
