Heliangelus amethysticollis -- Amethyst-throated Sunangel. Alternate name on piece: Heliangelus amethysicollis Layout drawing, quite well finished, color added to the birds; detail sketch of beak in margin; 4 notes on form; style much more precise than Gould 891-912; Sotheran's price at foot, "15/-." Title in pencil by Sotheran, bookseller. Artist's name(s): Gould, John; Richter, Henry Constantine.