arcticus, Scopelus Lütken [C. F.] 1892:207 [Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1891; ref. 13407] Davis Strait, Greenland. Lectotype: ZMUC 81. Paralectotypes: ZMUC 87x (1), 89x (1), 93 (1), 97x (1). Type catalog: Nielsen 1974:42 [ref. 9588] with lectotype selected by Wisner (in press). Also appeared in Lütken 1892:(236) 249 [29], Fig. 6 [ref. 2858]. •Valid as Protomyctophum arcticum (Lütken 1892) -- (Krefft & Bekker 1973:196 [ref. 7181], Hulley in Whitehead et al. 1984:479 [ref. 13675], Scott & Scott 1988:231 [ref. 25518], McAllister 1990:110 [ref. 14674], Santos et al. 1997:50 [ref. 23531], Porteiro et al. 1999:40 [ref. 24203], Bañón Díaz et al. 2001:290 [ref. 26424], Moore et al. 2003:203 [ref. 27076], Møller et al. 2010:34 [ref. 31169], Mecklenburg et al. 2011:120 [ref. 31212], Afonso et al. 2016:29, 257 [ref. 36199], Hulley 2016:1924 [ref. 34576], Mecklenburg et al. 2018:107 [ref. 36370], Carneiro et al. 2019:126 [ref. 37250], Sutton et al. 2020:213 [ref. 37832] in subgenus Hierops, Page et al. 2023:97 [ref. 40505]). Current status: Valid as Protomyctophum arcticum (Lütken 1892). Myctophidae: Myctophinae. Distribution: North Atlantic and adjacent Arctic areas. Habitat: marine.