undulata, Muraenophis Lacepède [B. G. E.] (ex Commerson) 1803:629, 642, Pl. 19 (fig. 2) [Histoire naturelle des poissons (Lacepède) v. 5; ref. 4930] No locality stated. Holotype (unique): whereabouts unknown. Type catalog: Bauchot et al. 1993:127 [ref. 20810], Böhlke & Smith 2002:152 [ref. 26380] Neotype designation by Fricke 1999:55 [ref. 24106] is invalid; see Fricke 2000:639 [ref. 24537]. Based on a drawing in manuscript by Commerson (Philibert Commerson, 1727-1773, French explorer and natguralist). •Synonym of Echidna catenata (Bloch 1795) -- (Smith & Böhlke 1990:138 [ref. 19379]). •Valid as Lycodontis undulatus (Lacepède 1803) -- (Dor 1984:29 [ref. 29757]). •Valid as Gymnothorax undulatus (Lacepède 1803) -- (Hatooka in Masuda et al. 1984:24 [ref. 6441], Castle & McCosker 1986:173 [ref. 5645], Allen & Swainston 1988:32 [ref. 25477], Paxton et al. 1989:131 [ref. 12442], Winterbottom et al. 1989:9 [ref. 13251], Randall et al. 1990:40 [ref. 15987], Allen & Robertson 1994:47 [ref. 22193], Chen et al. 1994:53 [ref. 22258], Goren & Dor 1994:7 [ref. 25356], McCosker & Rosenblatt in Fischer et al. 1995:1311 [ref. 22830], Quéro & Saldanha 1995:67 [ref. 22017], Randall & Golani 1995:868 [ref. 21744], Randall 1995:57 [ref. 22896], Allen 1997:52 [ref. 23977], Carpenter et al. 1997:107 [ref. 23922], Kuiter 1997:28 [ref. 25488], Randall et al. 1997:40 [ref. 25919], Myers 1999:50 [ref. 23965], Fricke 1999:54 [ref. 24106], Böhlke et al. 1999:1657 [ref. 24692], Johnson 1999:721 [ref. 25471], Böhlke & Randall 2000:258 [ref. 24493], Nakabo 2000:209 [ref. 25086], Compagno in Randall & Lim 2000:585 [ref. 25122], Sadovy & Cornish 2000:34 [ref. 25480], Böhlke & McCosker 2001:73 [ref. 25226], Hutchins 2001:17 [ref. 25847], Nakabo 2002:209 [ref. 26001], Böhlke & Smith 2002:152 [ref. 26380], Allen & Adrim 2003:23 [ref. 26830], Manilo & Bogorodsky 2003:S95 [ref. 27377], Myers & Donaldson 2003:611 [ref. 27495], Hatooka 2003:7 [ref. 27558], Lobel & Lobel 2004:68 [ref. 27576], Randall et al. 2004:7 [ref. 27624], Heemstra et al. 2004:3316 [ref. 27945], Randall 2005:48 [ref. 28239], Mundy 2005:124 [ref. 28379], Allen et al. 2006:257 [ref. 29005], Randall 2007:93 [ref. 30952], Fricke et al. 2009:17 [ref. 30213], Motomura et al. 2010:73 [ref. 31256], Zhang et al. 2010:272 [ref. 31511], Fricke et al. 2011:351 [ref. 31242], Allen & Erdmann 2012:95 [ref. 31980], Smith 2012:28 [ref. 32155], Allen & Erdmann 2012:95 [ref. 31980], Page et al. 2013:61 [ref. 32708], Larson et al. 2013:26 [ref. 32988], Ho et al. 2015:161 [ref. 34130], Fourriére et al. 2016:441 [ref. 34668], Del Moral-Flores et al. 2016:606 [ref. 34923], Koeda et al. 2016:8 [ref. 35333], Fricke et al. 2018:39 [ref. 35805], Golani & Fricke 2018:23 [ref. 36273], Huang et al. 2018:[2] [ref. 35898], Arndt & Fricke 2019:24 [ref. 36883], Dalleau-Coudert et al. 2019:112 [ref. 40104], Eagderi et al. 2019:18 [ref. 37020], Fricke et al. 2019:52 [ref. 36673], Zajonz et al. 2019:62 [ref. 36871], Smith et al. 2019:58 [ref. 37159], Habib & Islam 2020:Supplementary table p. 5 [ref. 38321], Ramos-Castro et al. 2020:83 [ref. 37651], Sithole et al. 2020:175 [ref. 37459], Dale et al. 2021:315 [ref. 38298], Wada et al. 2021:36 [ref. 38521], Eudeline 2022:144 [ref. 39191], Grove et al. 2022:16 [ref. 41326], Smith & Böhlke 2022:65 [ref. 39681], Page et al. 2023:52 [ref. 40505], Allen & Erdmann 2024:105 [ref. 40796], Fricke et al. 2024:81 [ref. 41255], Fricke et al. 2024:117 [ref. 41622]). Current status: Valid as Gymnothorax undulatus (Lacepède 1803). Muraenidae: Muraeninae. Distribution: Red Sea; Indo-West Pacific: Eastern Cape and KwaZulu-Natal (South Africa), East Africa, Persian Gulf, Socotra, Seychelles, Comoros, Mayotte (France), Madagascar, Seychelles, Maldives and Mascarenes (La Réunion, Mauritius, Rodrigues) east to Hawaiian Islands (U.S.A.) and Gambier Islands, north to Amami Islands (southern Japan) and Ogasawara Islands, south to Western Australia at 28°54'S, New South Wales (Australia) and New Caledonia; eastern Pacific: Costa Rica south to Colombia, including Revillagigedo Islands (Mexico), Cocos Island (Costa Rica) and Galapagos Islands (Ecuador). Habitat: marine.