抄録
Four new species of decapod crustaceans are described from the Upper Cretaceous Upper Yezo Group in Hokkaido, Japan. The monotypic genus Paki (Thalassinidea, Micheleidae) is erected with P. rurkonsimpu sp. nov. Hoploparia kamuy sp. nov. (Astacidea, Nephropidae) represents the first record of the genus Hoploparia from the Turonian-Santonian of Japan. Luisogalathea gen. nov. (Anomala, Galatheidae), erected with the type species L. tomitai sp. nov., contains two North American Cretaceous species, Galathea cretacea Stenzel and Eomunidopsis cobbani Bishop. Eomunidopsis kojimai sp. nov. (Anomala, Galatheidae) represents the first record of the genus from the North Pacific realm.
