Monograph of the Ramphastidae, or family of toucans: Part I
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- Ramphastos erythrohynchus plate 3
- Plate depicting: Tockus erythrorhynchus (Temminck, 1823) -- Red-billed Hornbill. Alternate name, as printed: Ramphastos erythrohynchus -- Red-billed toucan
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- Ramphastos citreopygus plate 4
- Plate depicting: Ramphastos vitellinus citreolaemus (Gould, 1844). Alternate name, as printed: Ramphastos citreopygus -- Lemon-rumped toucan
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- Ramphastos osculans plate 5
- Plate depicting: Chrysococcyx osculans (Gould, 1847) -- Black-eared Cuckoo. Alternate name, as printed: Ramphastos osculans -- Osculant toucan