trachynis, Synanceia Richardson [J.] 1842:385 [Annals and Magazine of Natural History (New Series) v. 9 (no. 59) (art. 42); ref. 21247] Port Essington, Northern Territory, Australia. Holotype: BMNH 1853.1.4.2 (skin). •Synonym of Synanceia horrida (Linnaeus 1766) -- (Eschmeyer & Rama-Rao 1973:352 [ref. 6391], Paxton et al. 1989:452 [ref. 12442], Larson & Williams 1997:353 [ref. 23967], Allen et al. 2006:906 [ref. 29078], Larson et al. 2013:85 [ref. 32988]). Current status: Synonym of Synanceia horrida (Linnaeus 1766). Synanceiidae: Synanceiinae. Habitat: brackish, marine.