(syn. Buteo Ϯ Hawaiian Hawk B. solitarius) Gr. ονυξ onux, ονυχος onukhos  claw ( cf. ονυχοειδης onukhoeidēs  like a nail); "Genus ONYCHOTES, Ridgway. ¶¶    Nostril nearly circular, with a conspicuous (not central) tubercle. Tarsus very long and slender; toes moderate; claws very long, strong and sharp, but only slightly curved.  ...  ¶¶. Onychotes, Ridgway, Nov. Gen.  (Type O. gruberi ...)" (Ridgway 1870).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 10 December 2018).