相模湾より得られたマナマコ属genus Apostichopus（Liao, 1980）を再検討した結果，これまでマナマコApostichopus japonicus（Selenka, 1867）とされていた種類には，真のマナマコApostichopus armata（Selenka, 1867）とアカナマコ Apostichopus japonicus（Selenka, 1867）の2種類が含まれている結果が得られた。この結果は，Kanno et al.（2003）により報告された遺伝的に異なる日本産Apostichopus属の2つの集団（アカとアオ・クロ）と一致する。We reviewed classifications of the sea cucumbers (holothurians) belonging to the genus Apostichopus Liao, 1980, collected from the Sagami Bay, central Japan. Detailed examinations have led to a conclusion that some of the specimens that had once been identified as Apostichopus japonicus (Selenka, 1867) should be re-classified as Apostichopus armata (Selenka, 1867). This conclusion agrees with the report that the Japanese Apostichopus holothurians are divided into two major groups (Kanno et al., 2003)
