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A monograph of the Trochilid or family of hummingbirds Plate . PETASOTHOSA DELPHINJE ff rtM ftftd ff tfei tt htfi ' Whfttn Plate Illustration biodiversitylibrary org title Gould John Hullmandel Walton Richter Henry Constantine Walter Cohn NameFound Petasophora delphin Biodiversity Heritage Library monograph of the