Monograph of the Trochilidae, or family of hummingbirds: Supplement Completed after the author's death by R. Bowdler Sharpe
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- Bearded Helmetcrest plate 41
- Plate depicting: Oxypogon guerinii cyanolaemus (Salvin & Godman, 1880) -- Bearded Helmetcrest. Alternate name, as printed: Oxypogon cyanolaemus
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- Bearded Mountaineer plate 42
- Plate depicting: Oreonympha nobilis (Gould, 1869) -- Bearded Mountaineer. Alternate name, as printed: Oreonympha nobilis