Key to Scientific Names in Ornithology

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(Tyrannidae; Ϯ Austral Negrito L. rufa) Prof. René-Primevère Lesson (1794-1849) French Navy surgeon-naturalist, explorer. "24. Genus, LESSONIA.  Rostrum breve, depressum, triangulare, apice adunca, culmine recto.  Vibrissæ mastacales.  Alæ longæ, acuminatæ, remigibus quatuor prioribus æqualibus.  Cauda æqualis.  Tarsi longissimi, graciles.  Digiti laterales æquales.  Ungues vix curvati, posticus longissimus.   ...   Type. — Anthus sordidus, LESSON.  Chili.  Mus. Nost.   ...   It is unquestionably the fissirostral type of the Motacillinæ, and seems to render the rank of Seiurus, as a sub-genus of Accentor, no longer doubtful.  By the kindness of M. Lesson, I am possessed of a specimen from the coast of Chili; and as I see no reason why botanists only should be commemorated by generic names, I trust I may be allowed to designate this new genus after the enterprising Zoologist by whom it was discovered." (Swainson 1832); "Lessonia Swainson, 1832, in Swainson and Richardson, Fauna, Bor.-Amer., 2 (1831), p. 490. Type, by monotypy, Anthus sordidus Lesson = Alauda rufa Gmelin." (Traylor in Peters 1979, VIII, 173).
Synon. Auchmalea, Centrites, Centrophanes.

lessonia / lessonii

● Prof. René-Primevère Lesson (1794-1849) French Navy surgeon-naturalist, explorer (syn. Ardea herodias, subsp. Ceyx azureus (ex Ceyx azurea Lesson), syn. Cinclodes patagonicus, Pterodroma, syn. Stercorarius longicaudus, syn. Syma torotoro).
● Pierre-Adolphe Lesson (1805-1888) French Navy surgeon-naturalist, botanist, brother of René-Primevère Lesson (syn. Campephilus guatemalensis, Momotus, syn. Oreopholus ruficollis, syn. Vini ultramarina).