Lampornis a methystinus -- Amethyst-throated Hummingbird, Amethyst-throated Mountaingem, Colibrí garganta amatista. Alternate name on piece: Delattria henrica. Layout drawing, plant finely drawn, birds very roughly sketched in; 1 bird and part of the plant on 2 pieces of litho transfer paper, attached with a straight pin; corrections, notes on color Artist's name(s): Gould, John; Richter, Henry Constantine.