blainvilleanus, Syngnathus Eydoux [J. F. T.] & Gervais [F. L. P.] 1837:3, Pl. 17 [Magasin de Zoologie 1837 (year 7); ref. 17471] Oceania. Holotype (unique): MNHN 0000-6050. Type catalog: Bertin & Estève 1950:49 [ref. 19576]. Also appeared as new in Eydoux & Gervais 1839, v. 5, p. 79, Pl. 32 [ref. 17472]. Leptonotus blainvillii Kaup 1856:46 [ref. 2575] is an unjustified emendation. •Valid as Leptonotus blainvilleanus (Eydoux & Gervais 1837) -- (Fritzsche 1980:190 [ref. 1511], Dawson 1982:41 [ref. 6764], Dawson 1985:112 [ref. 6541], Pequeño 1989:55 [ref. 14125], Chirichigno F. & Vélez D. 1998:101 [ref. 24555], Pequeño 1999:172 [ref. 24566], Pequeño 2000:87 [ref. 25224], Kuiter 2009:220 [ref. 30404], Nión et al. 2016:44 [ref. 35565], Hamilton et al. 2016:Supplement 2 [ref. 35615], Luzzatto & Estalles 2019:8 [ref. 36805]). Current status: Valid as Leptonotus blainvilleanus (Eydoux & Gervais 1837). Syngnathidae: Syngnathinae. Distribution: Chile, Argentina and Uruguay. Habitat: brackish, marine.