(syn. Anas Ϯ Campbell Island Teal A. nesiotis) Gr. ξενος xenos stranger; νηττα nētta duck; "The duck inhabiting Campbell Island, one of the subantarctic islands of the New Zealand region, appears to differ both in genus, and species from Nesonetta aucklandica of the Auckland Islands. The genus may be known as: XENONETTA, gen. nov. Bill narrow, not broad as in Nesonetta; culmen line, and sides of the maxilla nearly straight; lamellae and maxillary flap poorly developed; nail shorter and rounder than in Nesonetta; nasal openings small and oval. Mandible narrow, the gnathidia compressed at base. Wings short, the shafts weak; tail wedge-shaped, the shafts stiff. Tarsi reticulate. The species may be known as: XENONETTA NESIOTIS, sp. nov." (Fleming 1935).