mystax, Muraena Delaroche [F. E.] 1809:328 [42], Pl. 23 (fig. 10) [Annales du Muséum d'Histoire Naturelle, Paris v. 13; ref. 17380] Barcelona, Spain, western Mediterranean Sea. Holotype: MNHN 0000-8438. Paratypes: MNHN B-3157 (1). Type catalog: Bauchot et al. 1993:116 [ref. 20810]. On p. 42 and Pl. 4 of separate. •Valid as Gnathophis mystax (Delaroche 1809) -- (Blache et al. 1973:242 [ref. 7185], Bauchot & Saldanha in Whitehead et al. 1986:570 [ref. 13676], Smith 1989:521 [ref. 13285], Smith 1990:161 [ref. 13454], Andreata & Séret 1996:582 [ref. 16204] as "sp. aff. mystax", Uiblein et al. 1999:61 [ref. 24045], Bilecenoğlu et al. 2002:33 [ref. 26753], Menezes et al. in Menezes et al. 2003:37 [ref. 27192], Golani 2005:18 [ref. 37112], Fricke et al. 2007:24 [ref. 29533], Figueroa & Ehrlich 2006:234 [ref. 29812] as De la Roche, Lipej & Dulčić 2010:19 [ref. 36649], Bañón et al. 2011:262 [ref. 31676], Smith 2016:1688 [ref. 34556], Nión et al. 2016:25 [ref. 35565] as Gnatophis, Carneiro et al. 2019:67 [ref. 37250], Elbaraasi et al. 2019:92 [ref. 36864], Bariche & Fricke 2020:32 [ref. 37515], Kovačić et al. 2020:10 [ref. 37519], Golani 2021:17 [ref. 38303], Kovačić et al. 2021:19 [ref. 39014]). Current status: Valid as Gnathophis mystax (Delaroche 1809). Congridae: Congrinae. Distribution: Southwestern Atlantic; Mediterranean Sea; eastern Atlantic: southern Portugal south to Morocco, including Azores and Madeira. Habitat: marine.