Acanthidium Lowe [R. T.] 1839:91 Neut. Acanthidium pusillum Lowe 1839. Type by subsequent designation. Type designated by Jordan & Evermann 1896:55 [ref. 2443] and Goode & Bean 1896:10 [ref. 1848]. Misspelled Acanthidim in Zoological Record for 1903. •Synonym of Etmopterus Rafinesque 1810 -- (Krefft & Tortonese 1973:42 [ref. 7165], Compagno 1984:69 [ref. 6474]). Current status: Synonym of Etmopterus Rafinesque 1810. Etmopteridae.