The purpose of this application, under Articles 29 and 55 of the Code, is to remove the homonymy between the family-group names chilodontidae Macalister, 1876 (type genus Chilodon Ehrenberg, 1834 [Ciliophora]), chilodontinae, an emendation of chilodinae Eigenmann, 1910 (type genus Chilodus Müller & Troschel, 1844 [Pisces]), and chilodontinae Wenz, 1938 (type genus Chilodonta Étallon, 1859 [Gastropoda]). It is proposed to place the unused name chilodontidae Macalister, 1876 on the Official Index; to place the name chilodontinae Eigenmann, 1910, as emended by Fowler (1950), on the Official List; and that the stem of the generic name Chilodonta Étallon, 1859 be deemed to be Chilodonta-, such that the name chilodontinae Wenz, 1938 is emended to chilodontainae Wenz, 1938.