Amazilia yucatanensis cerviniventris -- Buff-bellied Hummingbird, Colibrí­ yucateco. Alternate name on piece: Amazilia cerviniventris. Layout drawing, birds well finished; corrections; "from Salle" (see text); Curtis 3rd series, 5-4472--Gonolobus martianus. Title in pencil by Sotheran, bookseller. Artist's name(s): Gould, John; Richter, Henry Constantine.