tractus, Acanthurus Poey [F.] 1860:208 [Memorias sobre la historia natural de la Isla de Cuba v. 2; ref. 3499] Cuba. Holotype: MCZ 21856. Type catalog: Howell Rivero 1938:206 [ref. 22926] with MCZ 21856 as holotype. •Synonym of Acanthurus bahianus Castelnau 1855 -- (Randall 1956:225 [ref. 12221]). •Valid as Acanthurus tractus Poey 1860 -- (Bernal & Rocha 2011:64 [ref. 31336], Page et al. 2013:180 [ref. 32708], Smith-Vaniz & Collette 2013:182 [ref. 32953], Smith-Vaniz & Jelks 2014:82 [ref. 33341], Robertson et al. 2016:148 [ref. 34961], Robertson et al. 2020:150 [ref. 38098], Escobar-Sierra et al. 2021:77 [ref. 38844], Bennema & van Moorsel 2022:69 [ref. 39585], Page et al. 2023:163 [ref. 40505]). Current status: Valid as Acanthurus tractus Poey 1860. Acanthuridae. Distribution: Western Atlantic: Massachusetts (U.S.A.) and Bermuda to Trinidad and Tobago, including Gulf of Mexico and Caribbean islands. Habitat: marine.