The purpose of this application, under Articles 81.1, 81.2.3.2, 23.9.3 and 33.3.1 of the Code is to (1) conserve the family name corcoracidae Mathews, 1927 for the Australian bird family known as mudnesters; and (2) conserve melanorhamphos Vieillot, 1817 as the correct spelling of the valid name for the type species of the type genus of corcoracidae. At family or subfamily rank, corcoracidae has been in prevailing use for the mudnesters for over 50 years. Reversal of precedence for the competing name struthideidae Mathews, 1924 under Article 81.2.3.2 of the Code will maintain stability in nomenclature. The species-group name melanorhamphos, an incorrect subsequent spelling of Coracia melanoramphos Vieillot, 1817, has also been in prevailing use for the type species of the type genus of corcoracidae for over 50 years. Deeming melanorhamphos as the correct original spelling under Article 81.1 and in accordance with Article 33.3.1 will also maintain stability in nomenclature.