(syn. Calyptorhynchus Ϯ Glossy Black Cockatoo C. lathami halmaturinus) Dr Ronald Hamlyn Hamlyn-Harris (1874-1953) English zoologist, Director of Queensland Mus., Brisbane; Gr. ορνις ornis, ορνιθος ornithos bird; "HARRISORNIS gen. nov. Type Calyptorhynchus halmaturinus Mathews. Differs from Calyptorhynchus in having a distinct sharp keel to the culmen; and although the smallest of the black cockatoos has the widest bill, the lower mandible being particularly noticeable, being bigger than that of C. macrorhynchus." (Mathews 1914).