瀬戸内海燧灘より採集されたCaudina similis (Augustin, 1908) （ナマコ綱，隠足目，カウディナ科）

Three specimens of Caudina similis (Augustin, 1908) were collected from Hiuchi-Nada in the Seto Inland Sea of Japan. The archived occurences of this species have been reported so far in the Uraga Channel (Tokyo Bay), the Sagami Bay adjacent to Tokyo Bay, off Onagawa (Miyagi Prefecture, Japan) and the south Yellow Sea. We hereby report that additional specimens were newly collected from the Seto Inland Sea.