gymnognathos, Scarus Bleeker [P.] 1853:498 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 4 (no. 3); ref. 336] Jakarta, Java, Indonesia. Holotype (unique) (?): BMNH 1864.5.15.25. •Synonym of Scarus sordidus Forsskål 1775 -- (Randall & Bruce 1983:31 [ref. 5412], Choat & Randall 1986:221 [ref. 8099]). •Synonym of Chlorurus sordidus (Forsskål 1775) -- (Parenti & Randall 2000:53 [ref. 2494], Kottelat 2013:380 [ref. 32989]). Current status: Synonym of Chlorurus sordidus (Forsskål 1775). Labridae. Habitat: marine.