The purpose of this application, under Article 75.5 of the Code, is to conserve the usage of the name Chionobas chryxus Doubleday, 1849 (currently Oeneis chryxus) in its original and accustomed usage for a nymphalid butterfly from the Rocky Mountains by designation of an identifiable neotype. Chionobas chryxus Doubleday 1849 (currently Oeneis chryxus) was described and figured from a male specimen which has since been lost. The original figure perfectly matches males of one of the two species into which the species was later divided. In 1984 a female specimen was designated as lectotype but the lectotype lacks adequate locality data and is a female so cannot be determined as either of the two segregate species, and the validity of this designation under Article 72.4.1.1 of the Code is unclear. It is proposed that all previous type fixations for the species Chionobas chryxus be set aside and a male specimen identifiable as the species proposed in the original publication be designated as neotype.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the widely used generic name Maculinea Van Eecke, 1915 in its accustomed usage. The name Maculinea Van Eecke, 1915 is threatened by its senior synonym Phengaris Doherty, 1891. It is proposed that Maculinea be given precedence over the other name whenever the two are considered to be synonyms.

The purpose of this application, under Article 23.9.5 of the Code, is to conserve the specific name Cetonia squamosa Gory & Percheron, 1833 (currently Aethiessa squamosa, cetoniidae, endemic in Sicily), threatened by the senior homonym Cetonia squamosa Lefebvre, 1827 (currently Protaetia (Netocia) squamosa, also cetoniidae, endemic in southern Italy including Sicily). Both names are in current use, but are placed in different genera and are unlikely ever to be treated as congeneric. In order to conserve the current usage of the name it is proposed that C. squamosa Gory & Percheron, 1833 (which does not have junior synonyms) be conserved by ruling that it is not invalid by reason of being a junior homonym of C. squamosa Lefebvre, 1827.

The purpose of this application, under Articles 23.9.3 and 81.2.3 of the Code, is to conserve the name Prionocerus bicolor Redtenbacher, 1868 for a common species of soft-winged flower beetle (cleroidea, prionoceridae) by giving it precedence over the unused older name P. pertii Laporte de Castelnau, 1836 whenever these names are considered to be synonyms.

The purpose of this application, under Articles 23.9.3 and 81, is to maintain usage of the junior homonym Chaetosoma Westwood, 1851 and of the junior synonym Apodasya Pascoe, 1863 over the newly discovered older name Chaetosoma Chevrolat, 1843. The Commission is also asked to conserve the beetle family-group name chaetosomatidae Crowson, 1952 by suppressing the older but permanently invalid nematode name chaetosomatidae Claus, 1872.

The purpose of this application, under Articles 23.9.3 and 70.2 of the Code, is to conserve the usage of the cucujoidea family name latridiidae Erichson, 1842 by giving it precedence over the senior name corticariidae Curtis, 1829, and to conserve the current usage of the widely used name Corticaria Marsham, 1802 by designation of Corticaria ferruginea Marsham, 1802 as the type species.

The purpose of this application, under Article 75.6 of the Code, is to conserve prevailing usage of the species group names tenuirostris Kuhl, 1820 and pastinator Gould, 1841, long employed for the southeastern and respetive south-western species of Australian long-billed corellas, genus Cacatua Vieillot, 1817. The only apparently traceable syntype of tenuirostris Kuhl has been found to be of the southwestern species; the resulting nomenclatural shift would destabilise established usage and confound past and future references to the name in literature. To conserve the long-accustomed use of tenuirostris Kuhl for the southeastern corella and to maintain pastinator Gould as the valid name for the southwestern long-billed corella, we propose that the only known syntype of tenuirostris Kuhl be set aside and replaced with a neotype of the southeastern species.

The purpose of this application, under Article 81.1 of the Code, is to conserve the long and widely used name Rhynchotherium Falconer, 1868, applied to proboscidean fossils from North America, by designating Rhynchotherium falconeri Osborn, 1923 as the type species. It has long been agreed that the cast of the holotype of R. tlascalae Osborn, 1918, the type species of Rhynchotherium, belongs to the genus Gomphotherium Burmeister, 1837, so preservation of the present usage of the genus name Rhynchotherium requires a type species that fits the current concept of the genus. It is proposed that Rhynchotherium falconeri Osborn, 1923 be designated the type species.

The Commission has conserved the current usage of the name Euspira helicina (Brocchi, 1814) for a species of naticine gastropod from the Pliocene of Piacenza area, Italy by setting aside previous type fixations and designating a neotype.

The Commission has conserved the usage of the name Halectinosoma Vervoort, 1962 for a common genus of primarily marine harpacticoid copepods in the family ectinosomatidae. The name Halectinosoma was threatened by the senior subjective synonym Pararenosetella Lang, 1944 (type species Ectinosoma erythrops Brady, 1880). All previous type fixations for Halectinosoma Vervoort, 1962 were set aside and Ectinosoma chrystalii Scott, 1894 has been designated as the type species. Halectinosoma Vervoort, 1962 has also been given precedence over Pararenosetella Lang, 1944 whenever the two names are considered to be synonyms.

The Commission has conserved the generic name Heterolaophonte Lang, 1948 for a group of marine harpacticoid copepods (family laophontidae) by giving it precedence over the unused senior names Mesolaophonte Nicholls, 1941 and Monolaophonte Nicholls, 1941 whenever these names are considered to be synonyms.

The Commission conserved the name Delognatha Lacordaire, 1859 for a tenebrionid beetle genus from the Neotropical Region by suppression of the name Delognatha Agassiz, 1846.

The Commission has suppressed the ambiguous binomen Columba norfolciensis Latham, 1801, which has been applied to three different species in different columbid genera within the last hundred years.

The Commission has ruled to confirm that, with respect to the specific name of the black-browed albatross Diomedea melanophris Boie in Temminck, 1828 (currently Thalassarche melanophris) melanophris is the correct original spelling.