Vessel "Kaiyo Maru " in 1967*

fishing potential. The benthonic invertebrates, chiefly the decapod crustaceans, collected at that time were forwarded to our laboratory for study. Prior to that operation the Seikai Regional Fisheries Research Laboratory, Nagasaki, has been engaged in a study of fishes as well as benthonic animals inhabiting there and the crustaceans collected were also presented to our laboratory by the courtesy of Mr. Hideo Yamashita. Its collection came from rather shallow waters at most down to about 100 m. However, Kaiyo Maru trials for dredging and trawling were conducted between 100 and 1,000 m in depths, and there-fore yielded an interesting collection. I take here the opportunity to report the section of the families Chirostylidae and Galatheidae. The collection of this group contains 22 specimens, divided among 8 species, i.e., 3 species of the Chirostylidae and 5 of the Galatheidae. From this area were already reported 11 species based upon the Seikai Regional Fisheries Research Laboratory collection (Miyake & Baba, 1964, 1967). The present species except for one chirostylid and one galatheid are all recorded for the first time from the East China Sea, therefore this area now has inhabitants of 17 species of the group