(Accipitridae; Ϯ Madagascar Serpent Eagle E. astur) Gr. ευ eu  fine, another; τριορχης triorkhēs  buzzard  < τρεις treis, τρια tria  three; ορχις orkhis  testicle (see Triorchis); "EUTRIORCHIS, gen. nov.  Belongs to the group of bare-legged Eagles, and is closely allied to Spilornis and to Dryotriorchis, more particularly to the last, as might have been expected. It differs principally in having a full and rounded crest, all the plumes being rounded and not lanceolate; and it is unlike any of the other Harrier-Eagles in the extreme shortness of the wing, while the tail is inordinately long and equals the wing in dimensions. Just as Urotriorchis macrourus is the longest-tailed form of Goshawk yet known, so Eutriorchis is the longest-tailed Harrier-Eagle yet discovered. From Spilornis, which it resembles in the fulness and form of its crest, it differs in the length of tail and in its feathered lores.  The type is  EUTRIORCHIS ASTUR, sp. n.  ...  This new species has been discovered by Mr. Crossley in the southern portion of Madagascar. The affinities of the genus have been indicated above; and I have only to add that its general coloration resembles that of a Goshawk, and suggested the specific name to me." (Sharpe 1875).

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 on 19 January 2019).