macrocephalus, Gymnomuraena Bleeker [P.] 1864:54 [Nederlandsch Tijdschrift voor de Dierkunde v. 2; ref. 408] Ambon Island, Molucca Islands, Indonesia. Holotype (unique): BMNH 1867.11.28.335. Type catalog: Böhlke & Smith 2002:161 [ref. 26380]. More than one species may be involved -- Smith 2012:37 [ref. 32155]. •Valid as Uropterygius macrocephalus (Bleeker 1864) -- (Hatooka in Masuda et al. 1984:26 [ref. 6441], Allen & Robertson 1994:49 [ref. 22193], Chen et al. 1994:62 [ref. 22258], McCosker & Rosenblatt in Fischer et al. 1995:1313 [ref. 22830], Quéro & Saldanha 1995:64 [ref. 22017], Allen & Robertson 1997:820 [ref. 41086], De La Cruz Agüero et al. 1997:228 [ref. 24545], Grove & Lavenberg 1997:161 [ref. 24023], Myers 1999:52 [ref. 23965], Fricke 1999:59 [ref. 24106], Böhlke et al. 1999:1657 [ref. 24692], Randall 1999:7 [ref. 25829], Allen 2000:84 [ref. 37268], Böhlke & Randall 2000:269 [ref. 24493], Compagno in Randall & Lim 2000:585 [ref. 25122], Thomson et al. 2000:46 [ref. 25640], Randall & Earle 2000:7 [ref. 25806], Böhlke & Smith 2002:161 [ref. 26380], Allen & Adrim 2003:23 [ref. 26830], Myers & Donaldson 2003:612 [ref. 27495], Lobel & Lobel 2004:68 [ref. 27576], Randall et al. 2004:7 [ref. 27624], Nelson et al. 2004:61 [ref. 27807], Randall 2005:52 [ref. 28239], Love et al. 2005:19 [ref. 37547], Mundy 2005:126 [ref. 28379], Randall 2007:97 [ref. 30952], Loh et al. 2008:140 [ref. 29930], Fricke et al. 2009:18 [ref. 30213], McCosker & Rosenblatt 2010:188 [ref. 30957], Motomura et al. 2010:73 [ref. 31256], Zhang et al. 2010:232 [ref. 31511], Golani & Bogorodsky 2010:59 [ref. 35264], Fricke et al. 2011:351 [ref. 31242], Allen & Erdmann 2012:98 [ref. 31980], Smith 2012:37 [ref. 32155], Page et al. 2013:61 [ref. 32708], Delrieu-Trottin et al. 2015:4 [ref. 33988], Ho et al. 2015:163 [ref. 34130], Fourriére et al. 2016:441 [ref. 34668], Del Moral-Flores et al. 2016:606 [ref. 34923], Golani & Fricke 2018:24 [ref. 36273], Arndt & Fricke 2019:24 [ref. 36883], Smith et al. 2019:67 [ref. 37159], Ramos-Castro et al. 2020:83 [ref. 37651], Dale et al. 2021:316 [ref. 38298], Love et al. 2021:34 [ref. 39279], Grove et al. 2022:16 [ref. 41326], Smith & Böhlke 2022:76 [ref. 39681], Page et al. 2023:52 [ref. 40505], Allen & Erdmann 2024:109 [ref. 40796], Fricke et al. 2024:81 [ref. 41255], Fricke et al. 2024:118 [ref. 41622]). Current status: Valid as Uropterygius macrocephalus (Bleeker 1864). Muraenidae: Uropterygiinae. Distribution: Red Sea; Indo-West Pacific: Seychelles, western Mascarenes (La Réunion, Mauritius); Christmas Island (eastern Indian Ocean) east to Hawaiian Islands, north to southern Japan, south to Loyalty Islands (New Caledonia); eastern Pacific: Pacific coast of southern Baja California Sur (Mexico) south to Peru, including Gulf of California (Mexico), Revillagigedo Islands (Mexico), Clipperton Island (France) and Galapagos Islands (Ecuador) Habitat: marine.