International Commission on Zoological Nomenclature:
OPINIONS and DIRECTIONS
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Ctenites Bertrand 1763, Dict. Univ. Foss. Propres Foss. Accid., 1: 183) (included in a work rejected for nomenclatural purposes). Opinion 592
Ctenium Menge 1871, Schriften der Naturforschenden Gesellschaft in Danzig, (2)2: 292 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy) (Arachnida, Araneae). Opinion 1426
Ctenolepisma Escherich 1905 (Zygentoma). ICZN 2018: Opinion 2427
Ctenomorpha Gray 1833, Entomol. Aust., (1): 16, 27 (gender: feminine) (type species, by designation by Kirby 1904 (Syn. Cat. Orthopt., 1: 388): Ctenomorpha marginipennis Gray 1833, Entomol. Aust., (1): 16, pl. 1, fig. 2, valid name: Diura chronus Gray 1833) (Insecta, Phasmida). Opinion 641
Ctenomorphodes Karny 1923, Treubia, 3: 240 (gender: masculine) (type species, by original designation: Phasma (Diura) briareus Gray 1834, Trans. entomol. Soc. London, 1: 45) (Insecta, Phasmida). Opinion 641
CTENOPHTHALMINAE Rothschild 1915, Entomol. mon. Mag., 51: 77 (type genus: Ctenophthalmus Kolenati 1856) (Insecta, Siphonaptera). Opinion 741
Ctenophthalmus Kolenati 1856, Parasiten der Chiroptern (Brünn ed.): 33 (gender: masculine) (type species, by designation under the plenary power: Ctenophthalmus bisoctodentatus Kolenati 1863, Hor. Soc. entomol. ross., 2: 35, pl. 2, fig. 6) (Insecta, Siphonaptera). Opinion 741
Ctenopsyllus Kolenati 1863, Hor. Soc. entomol. ross., 2: 37 (a junior homonym of Ctenopsyllus Kolenati 1856). Opinion 285
CTENOPTERYGIDAE Grimpe 1922, Sitzungsberichte der naturforschenden Gesellschaft zu Leipzig, 45-48 (1918-1921): 45 (an incorrect original spelling of CHTENOPTERYGIDAE) (Cephalopoda, Coleoidea). Opinion 1793
Ctenopteryx Joubin 1900, Résultats des Campagnes Scientifiques accomplies sur son yacht par Albert Ier Prince Souverain de Monaco, 17: 9 (an incorrect subsequent spelling of Chtenopteryx Appellöf 1890) (Cephalopoda, Coleoidea). Opinion 1793
Ctenopteryx Pfeffer 1900, Mitteilungen aus dem Naturhistorischen Museum in Hamburg, 17: 171 (an unjustified emendation of Chtenopteryx Appellöf 1890 and a junior homonym of Ctenopteryx Flach 1889) (Cephalopoda, Coleoidea). Opinion 1793
ctenopus Gosse 1855 [originally in Halacarus], Annals and Magazine of Natural History, (2)16: 28, as defined by the neotype (specimen labelled USNM No. 44-211-27) designated under the plenary power (specific name of the type species of Halacarus Gosse 1855) (Arachnida). Opinion 2051