polygonius, Gymnothorax Poey [F.] 1875:68, Pl. 10 [Annals of the Lyceum of Natural History of New York v. 11 (nos 3-4) (art. 6); ref. 18564] Cuba. Holotype (unique): USNM 9825. Type catalog: Smith 1994:20 [ref. 21917], Faloh-Gandarilla et al. 2016:28 [ref. 35195]. •Valid as Lycodontis polygonius (Poey 1875) -- (Cervigón 1991:40 [ref. 24472], Cervigón 1992:369 [ref. 23827]). •Valid as Gymnothorax polygonius Poey 1875 -- (Bauchot in Whitehead et al. 1986:541 [ref. 13676], Böhlke et al. 1989:184 [ref. 13286], Smith & Böhlke 1990:143 [ref. 19379], McEachran & Fechhelm 1998:238 [ref. 23897], Smith-Vaniz et al. 1999:135 [ref. 25013], Gasparini & Floeter 2001:1643 [ref. 25634], Böhlke & Smith 2003:717 [ref. 26990], Menezes in Menezes et al. 2003:33 [ref. 27192], Nelson et al. 2004:61 [ref. 27807], Smith 2012:24 [ref. 32155], Page et al. 2013:61 [ref. 32708], Wirtz et al. 2013:117 [ref. 32972], Lins Oliveira et al. 2015:41 [ref. 37485], Pinheiro et al. 2015:6 [ref. 34324], Richardson & Brito 2015:1 [ref. 36244], Smith & Brito 2016:1630 [ref. 34557], Faloh-Gandarilla et al. 2016:28 [ref. 35195], Carneiro et al. 2019:61 [ref. 37250], Klautau et al. 2020:7 [ref. 37903], Page et al. 2023:52 [ref. 40505]). Current status: Valid as Gymnothorax polygonius Poey 1875. Muraenidae: Muraeninae. Distribution: Western Atlantic: North Carolina (U.S.A.) south to Rio de Janeiro (Brazil), including Gulf of Mexico and Caribbean Sea; southern central Atlantic: Ascension Island; eastern Atlantic: offshore islands, including Madeira. Habitat: marine.