‡ (syn. Tadorna Ϯ Crested Shelduck T. cristata) Gr. ψευδος pseudos false; genus Tadorna Oken, 1817, shelduck; "PSEUDOTADORNA, n. gen. ... PSEUDOTADORNA CRISTATA, n. sp. Crested Sheldrake Ad. (type of species). Crown of head, nape, a broad longitudinal band on hind neck, upper tail-coverts, tail and primaries black with some greenish lustre, nuchal feathers considerably elongated, forming a pendent crest or tuft; in ocular region a conspicuous spectacled patch of white, shortly prolonged to side of occiput . ... The type and the only specimen as yet obtained is probably an adult male. It was obtained in the Naktung River (or Rakutōkō) near Fusan, December (3?), 1916. It is preserved in the collection of the author (sp. no. 2650). Two allied species of the sheldrake have been known from Corea, viz., Tadorna cornuta (S. G. Gmelin) and Casarca rutila (Pall.), from both which the above described species is manifestly distinct." (Kuroda 1917); "Pseudotadorna Kuroda, Tori, 1, 1917, p. 1. Type, by monotypy, Pseudotadorna cristata Kuroda." (Peters 1931, 1, 157). This extinct shelduck was originally considered to be a hybrid.