Heliothryx barroti -- Hada enmascarada, Purple-crowned Fairy. Alternate name on piece: Heliothrix purpureiceps. Layout drawing, birds well finished; corrections; [Curtis] 4-4415--Vriesia glaucophylla bromeliaceae; large letter A. Title in pencil by Sotheran, bookseller. Artist's name(s): Gould, John; Richter, Henry Constantine.