Studies on the cirripedian fauna of Japan : 2. Cirripeds found in the vicinity of the Seto Marine Biological Laboratory

The purpose of the present paper is to describe the thoracic cirripeds found in the waters around the Seto Marine Biological Laboratory. The material dealt with in this paper was collected almost entirely by myself during the period extending from the summer of 1930 up to the present time, except a few species obtained from the Soyo-maru Expedition undertaken by the Imperial Fisheries Experimental Station during the years 1926-1930. Descriptions of the latter have already been given (HIRO, 1933a). The present material consists, with few exceptions, of specimens from the littoral zone and shallow water; none of the specimens are from deep water. However, I have paid special attention to the commensal forms from the ecological and faunistic standpoint, and have thus been able to enumerate a comparatively large number of species in such a restricted area as this district