retropinna, Argentina Richardson [J.] 1848:121, Pl. 52 (figs. 1-3) [Ichthyology of the voyage of H. M. S. Erebus & Terror v. 2 (2); ref. 3740] Bay of Islands, New Zealand. Syntypes: AMS I.7446 (1); BMNH 1855.9.19.855-856 (?4), 1965.11.5.1-7 (7). •Valid as Retropinna retropinna (Richardson 1848) -- (McDowall 1979:90 [ref. 7021], Paulin et al. 1989:87 [ref. 24556], McDowall & Stewart 2015:379 [ref. 34241]). Current status: Valid as Retropinna retropinna (Richardson 1848). Retropinnidae: Retropinninae. Distribution: New Zealand. Habitat: freshwater, brackish, marine.