Abstract
In 1985-1986, investigations on terrestrial tardigrades were carried out on the northern slope of Mt. Fuji. As the first part of the taxonomic work on the Eutardigrada collected there, the present paper deals with the members of the two families Calohypsibiidae and Eohypsibiidae. Calohypsibius ornatus (RICHTERS, 1900), Microhypsibius japonicus sp. nov., Amphibolus weglarskac (DASTYCH, 1972) and Fujiscon diphasconiellum gen. et sp. nov. are described.
