bicornis, Cottus Reinhardt [J. C. H.] 1840:9 [Oversigt over det Kongelige Danske Videnskabernes Selskabs Forhandlinger og dets Medlemmers Arbeider (Kjøbenhavn) v. 7 (1839); ref. 18617] East Greenland. No types known. Type catalog: Nielsen 1974:81 [ref. 9588]. Published two more times in 1840-41. Cottus bicornis Anonymous (Volta) 1796:clxiv, Pl. 39 (fig. 4) [ref. 30407] from the 'monti del Veronese' (mountains of Province Verona, Italy) is an homonym in fossil fishes; Agassiz 1835:293 [ref. 30408] noted that the original material is lost and the illustration in Volta 1796 is unidentifiable; the name Cottus bicornis Anonymous (Volta) 1796 was not used as valid since 1899, therefore reversal of precedence according to ICZN Art. 23.2 and 23.9 in favor of Cottus bicornis Reinhardt 1840. •Valid as Icelus bicornis (Reinhardt 1840) -- (Neelov 1973:596 [ref. 7219], Nelson 1984:35 [ref. 5391], Fedorov in Whitehead et al. 1986:1250 [ref. 13677], Robins & Ray 1986:282 [ref. 23100], Scott & Scott 1988:498 [ref. 25518], McAllister 1990:198 [ref. 14674], Yabe in Okamura et al. 1995:164 [ref. 22531], Mecklenburg et al. 2002:456 [ref. 25968], Parin et al. 2002:S77 [ref. 28300], Nelson et al. 2004:120 [ref. 27807], Love et al. 2005:88 [ref. 37547], Møller et al. 2010:52 [ref. 31169], Mecklenburg et al. 2011:122 [ref. 31212], Page et al. 2013:123 [ref. 32708], Dolgov 2013:918 [ref. 33112], Mecklenburg et al. 2014:145 [ref. 33463], Parin et al. 2014:253 [ref. 33547], Mecklenburg & Steinke 2015:164 [ref. 34033], Afonso et al. 2016:43, 173 [ref. 36199], Mecklenburg et al. 2016:67 [ref. 34440], Dolgov et al. 2018:120 [ref. 41055], Mecklenburg et al. 2018:205 [ref. 36370], Love et al. 2021:122 [ref. 39279], Zorina & Chernova. 2022:89 [ref. 40474], Page et al. 2023:186 [ref. 40505]). 1°Homonym. Current status: Valid as Icelus bicornis (Reinhardt 1840). Psychrolutidae. Distribution: Circumpolar in Arctic Ocean, North Atlantic and North Pacific. Habitat: marine.