Abstract
Five species belonging to the family Aristeidae are reported from the Pacific coast of northern Japan. One, Aristeus pallidicauda, is described as new based on a male and female specimens from off Miyako, Iwate Prefecture, at depths of 500-700 m. Plesiopenaeus edwardsianus (Johnson, 1867) is reported from northern Japan for the first time. Three species previously recorded from this area also included, Aristaeomorpha foliacea (Risso, 1827), Aristeus virilis (Bate, 1881), and Aristeus mabahissae Ramadan, 1938. The present material represents the northern limit of the distribution of these species in the western Pacific.
