JAPAN: Honshu, Chiba, 
            Station Bonshu (LACM 112927, 1 + 3 dried radulae). Honshu, 
             Bonshu Pen [= Boso Peninsula], 
            Nejimasaki (DMNH 053917, 1). Honshu, Kanagawa, Sagami (LACM 
            119068, 1; USNM ex 228275, 1). Honshu, Shizuoka, Matsuzakim (ANSP 
            399931, 1). Honshu, Kurihama, Miura Peninsula, entrance of Tokyo Bay, 
            Kii (USNM 753694, 1). Shikoku, Ehime, Misaki (ANSP 252573, 2). Shikoku, 
            Okinoshima, Tosa (DMNH 011021, 2; DMNH 008706, 1). Kyushu, Nagasaki, 
            Market of Enoshima (LACM 120227, 3). Kyushu, Kumamoto, Amakusa Marine 
            Laboratory (LACM 82-27, 9). Honshu 
            Hondo Is (AMS C.140678, 1). Honshu Is, Eno-shima (AMS C.403389, 1). 
            
          KOREA: 
            Off Seoul (AMS C.403383, 1). 
            
          LITERATURE: RANGE: 
            Honshu - S Kyushu (Kira, 1962: as gigantea). Japan, Korea (Abbott 
            & Dance, 1983: as gigantea).