Monograph of the Ramphastidae, or family of toucans: Part I

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Ramphastos vitellinus plate 9
Ramphastos vitellinus plate 9
Plate depicting: Ramphastos vitellinus vitellinus (Lichtenstein, 1823). Alternate name, as printed: Ramphastos vitellinus -- Sulphur-and-white-breasted toucan
Ramphastos ariel; Ramphastos tucanus plate 10
Ramphastos ariel; Ramphastos tucanus plate 10
Plate depicting: Ramphastos vitellinus ariel (Vigors, 1826). Alternate name, as printed: Ramphastos ariel -- Ariel toucan
Ramphastos dicolorus plate 11
Ramphastos dicolorus plate 11
Plate depicting: Ramphastos dicolorus (Linnaeus, 1766) -- Green-billed Toucan. Alternate name, as printed: Red-breasted toucan