Biilletin of Zoological Nomenclature 53(3) September 1996 223 OPINION 1855 Agonus Bloch & Schneider, 1801 (Osteichthyes, Scorpaeniformes): conserved; and agonidae Kirby, 1837 (Insecta, Coleoptera): spelling emended to agonumidae, so removing the homonymy with agonidae Swainson, 1839 (Osteichthyes, Scorpaeniformes) Keywords. Nomenclature: taxonomy; Osteichthyes; Scorpaeniformes; Coleoptera; agonidae; agonumidae; Agonus; Agomim. Ruling ( 1 ) Under the plenary powers: (a) the generic name Aspidophorus Lacepede, [1801] (Osteichthyes) is hereby suppressed for the purposes of the Principle of Priority but not for those of the Principle of Homonymy: (b) it is hereby ruled that for the purposes of Article 29 of the Code the stem of the generic name Agomim Bonelli, 1810 (Insecta) is agonum-. (2) The following names are hereby placed on the Official List of Generic Names in Zoology: (a) Agonus Bloch & Schneider, 1801 (gender: masculine), type species by subsequent designation by Tilesius in Pallas ([1814]) Cotius caiaphractus Linnaeus, 1758 (Osteichthyes); (h) Agonum Bonelli, 1810 (gender: neuter), type species by subsequent desig-nation by Curtis (1827) Canibus niarginatus Linnaeus, 1758 (Insecta). (3) The following names are hereby placed on the Official List of Specific Names in Zoology: (a) cataphraclus Linnaeus, 1758, as published in the binomen Coitus cata-phractus (specific name of the type species of Agonus Bloch & Schneider, 1801) (Osteichthyes); (b) marginatus Linnaeus, 1758, as published in the binomen Canibus niargina-tus (specific name of the type species of Agonum Bonelli, 1810) (Insecta). (4) The following names are hereby placed on the Official List of Family-Group Names in Zoology: (a) agonidae Swainson, 1839, type genus Agonus Bloch & Schneider, 1801 (Osteichthyes); (b) AGONUMIDAE Kirby, 1837, type genus Agomim Bonelli, 1810 (spelling emended by the ruling in (l)(b) above) (Insecta). (5) The name Aspidophorus Lacepede, [1801] (Osteichthyes) is hereby placed on the Official Index of Rejected and Invalid Generic Names in Zoology, as suppressed in (l)(a) above. (6) The name agonidae Kirby, 1837 (Insecta) is hereby placed on the Official Index of Rejected and Invalid Family-Group Names in Zoology (spelling emended to agonumidae in (l)(b) above). History of Case 2897 An application for the conservation of the generic name Agonus Bloch & Schneider, 1801, and for the removal of the homonymy between the family-group