Cyanophaia bicolor -- Blue-headed Hummingbird. Alternate name on piece: Thalurania ? [sic] wagleri. Layout drawing, birds well finished; corrections; "1 specimen"; Curtis, 3rd series 3, 4834--Burlingtonia decora. Title in pencil by Sotheran, bookseller. Artist's name(s): Gould, John; Richter, Henry Constantine.