J. F. Gmelin, 1789,
Thought to have come from Tahiti (French Polynesia). Known from single surviving specimen (preserved in World Museum, Liverpool) and a lost one, collected between 1783 and 1823; providence of specimens unknown, but, given the main area of activity of its collectors, this is most likely to have been a Pacific species.
May have been a bird described by Tahiti islanders in 1928, although probably almost extinct before epoch of European exploration of the zone. Causes of extinction unknown.