(Psittacidae; Ϯ Rusty-faced Parrot H. amazonina) Gr. ἁπαλος hapalos  delicate; ψιττακη psittakē  parrot; "Hapalopsittaca gen. nov.  Type, Psittacus amazoninus Des Murs.  Differing from Pionopsitta Bonaparte (type and only species Psittacus pileatus Scopoli) in having the bill relatively much narrower, with maxilla compressed laterally, its width at base equal to but little more than half the length (chord) of culmen; maxillary tomium without distinct, if any, post-ungual notch or "tooth"; base of mandible beneath narrowly and deeply concave; tenth (outermost) primary equal to seventh; lores densely feathered; auricular feathers narrow, somewhat elongated; tail dusky blue distally, dusky red proximally, and sexes alike in color.  ('Aπαλος, delicate; ψιττακη, a parrot.)" (Ridgway 1912).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 19 January 2019).