1933 年 2 巻 2 号 p. 62-64
Large blocks of nodules were dredged by the surveying ship Soyomaru at the station 221, 33° 20'30"N, 135° 50'00" E, about three miles off Muroto Peninsula, Prov. Tosa, at a depth of 209 meters and were put at my disposal through the kindness of the director of the Imperial Fisheries Experimental Station.
On breaking one of these hard nodules, many fragments of fossil crab and mollusk were obtained. The specimens of fossil crabs consist of one carapace; right half of a body comprising carapace, abdomen, cheliped and an ambulatory leg; a fragment with an arm and first leg; two palms; and many fragments of ambulatory legs.
They are undoubtedly referable to one species and capable of being described under the following one series of headings.