(syn. Chrysococcyx Ϯ Klaas's Cuckoo C. klaas) Gr. αδαματος adamatos unwedded < negative prefix α- a- ; δαμαω damaō to give in marriage; ορνις ornis, ορνιθος ornithos bird; ""Chrysococcyx" klaasi (Stephen) is much smaller than cupreus, side by side with which it occurs quite commonly during the breeding season, and it may therefore be separated under the name of ADAMATORNIS gen. nov." (A. Roberts 1922); "Adamatornis Roberts, Ann. Transv. Mus., 8, 1922, p. 219. Type, by monotypy, Chrysococcyx klaasi (Stephen) [sic] = Cuculus klaas Stephens." (Peters 1940, IV, 29).