augusti, Thyrsoidea Kaup [J. J.] 1857:88 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] Madeira. No types known. Type catalog: Bauchot et al. 1993:127 [ref. 20810]. Not a synonym of Muraena helena -- Smith 2012:30 [ref. 32155]. •Synonym of Muraena helena Linnaeus 1758 -- (Smith & Böhlke 1990:145 [ref. 19379]). •Valid as Muraena augusti (Kaup 1857) -- (Böhlke et al. 1989:195 [ref. 13286], Santos et al. 1997:20 [ref. 23531], Arruda 1997:55 [ref. 24952] with Günther 1870 as author, Jiménez et al. 2007:101 [ref. 29038], Smith 2012:30 [ref. 32155], Wirtz et al. 2013:118 [ref. 32972], Smith & Brito 2016:1633 [ref. 34557], Carneiro et al. 2019:62 [ref. 37250]). Current status: Valid as Muraena augusti (Kaup 1857). Muraenidae: Muraeninae. Distribution: Eastern Atlantic: Portugal to Madeira and Azores. Habitat: marine.