Heliodoxa imperatrix -- Empress Brilliant. Alternate name on piece: Eugenia imperatrix. Layout drawing, birds well finished; corrections; "To be finished and sent Monday morning 20th"; rough sketch of hummingbirds in a glass display dome, in lower margin. Title in pencil by Sotheran, bookseller. Artist's name(s): Gould, John; Richter, Henry Constantine.