Meioceras elongatum de Folin, 1881, has been described from “mers de Chine” (China Seas) and was never recorded thereafter. The three syntypes are not conspecific and have probably a different origin. To stabilize the nomenclature, the specimen best fitting the original description and illus­tration is here selected as lectotype. As a consequence, Mei­oceras elongatum has to be considered a junior synonym of M. nitidum (Stimpson, 1851).