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A monograph of the Trochilid or family of hummingbirds Plate . nh ffV Rirhttl hih ASOIMIDRA THAI AS SIS tfm UWmhvn lmp Plate Illustration biodiversitylibrary org title Gould John Hullmandel Walton Richter Henry Constantine Walter Cohn NameFound Petasophora thalassina Biodiversity Heritage Library monograph of the Trochilid