cyanescens, Boxaodon Guichenot [A.] 1848:209, Pl. 5 (fig. 1) [Fauna Chilena.... in Gay.; ref. 1939] Valaparaiso, Chile. Holotype (unique): MNHN 0000-9128. Type catalog: Bauchot 1974:989 [ref. 21548]. Spelled cianescens by Delfin 1900 [ref. 37395]. •Synonym of Emmelichthys nitidus Richardson 1845, but a valid subspecies -- (Heemstra & Randall 1977:381 [ref. 7057], Tameka in Okamura et al. 1982:235, 381 [ref. 8256], Nakamura in Nakamura et al. 1986:216 [ref. 14235], Pequeño 1989:61 [ref. 14125]). •Synonym of Emmelichthys nitidus Richardson 1845 -- (Oyarzún G. & Arriaza Z. 1993:342 [ref. 22360]). •Valid as Emmelichthys cyanescens (Guichenot 1948) -- (Fricke et al. 2014:87 [ref. 33406], Girard et al. 2024:106 [ref. 40952]). Current status: Valid as Emmelichthys cyanescens (Guichenot 1848). Emmelichthyidae. Distribution: Eastern Pacific: Juan Fernandez Islands and Chile. Habitat: marine.