Monograph of the Trochilidae, or family of hummingbirds: Part IV
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- White-vented Violetear plate 223
- Plate depicting: Colibri serrirostris (Vieillot, 1816) -- White-vented Violetear. Alternate name, as printed: Petasophora serrirostris
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- Brown Violet-ear, Brown Violetear plate 224
- Plate depicting: Colibri delphinae (Lesson, 1839) -- Brown Violet-ear, Brown Violetear. Alternate name, as printed: Petasophora anais