acutus, Uropterygius Parr [A. E.] 1930:16, Fig. 2 [Bulletin of the Bingham Oceanographic Collection Yale University v. 3 (art. 4); ref. 3370] West Caicos Island, Bahamas, depth 30 fathoms (stomach content). Holotype (unique): YPM 2604. Type catalog: Moore & Boardman 1991:19 [ref. 16741], Böhlke & Smith 2002:91 [ref. 26380] More than one species may be involved -- Smith 2012:30 [ref. 32155]. •Valid as Uropterygius acutus Parr 1930 -- (Andreata & Séret 1996:581 [ref. 16204]). •Valid as Monopenchelys acuta (Parr 1930) -- (Böhlke & McCosker 1982:128 [ref. 502], Böhlke et al. 1989:191 [ref. 13286], Smith 1989:905 [ref. 13285], Smith & Böhlke 1990:144 [ref. 19379], Böhlke et al. 1999:1657 [ref. 24692], Böhlke & Randall 2000:261 [ref. 24493], Schmitter-Soto et al. 2000:148 [ref. 27754], Böhlke & Smith 2002:91 [ref. 26380], Randall et al. 2002:154 [ref. 26192], Collette et al. 2003:99 [ref. 26784], Böhlke & Smith 2003:718 [ref. 26990], Nelson et al. 2004:61 [ref. 27807], Randall 2005:49 [ref. 28239], Mundy 2005:125 [ref. 28379], Randall 2007:94 [ref. 30952], Smith 2012:30 [ref. 32155], Page et al. 2013:61 [ref. 32708], Wirtz et al. 2013:118 [ref. 32972], Fricke et al. 2014:20 [ref. 33932], Smith-Vaniz & Jelks 2014:24 [ref. 33341], Wirtz et al. 2014:3 [ref. 33516], Pinheiro et al. 2015:6 [ref. 34324], Smith & Brito 2016:1640 [ref. 34557], Smith & Böhlke 2022:67 [ref. 39681], Page et al. 2023:52 [ref. 40505], Fricke et al. 2024:117 [ref. 41622]). Current status: Valid as Monopenchelys acuta (Parr 1930). Muraenidae: Muraeninae. Distribution: Circumglobal in warm waters. Habitat: marine.