Blue-breasted Sapphire (Hylocharis lactea), John Gould Lesson created great confusion when he figured this bird in his “Histoire Naturelle des Oiseaux Mouches” as the female of Hylocharis sapphirinus, for it has no reference whatever to that species; it is true that he corrected this error in a subsequent publication, the “Index Générale et Synoptique des Oiseaux du genre Trochilus,” and there described the bird as distinct under the name of Ornismya lactea; but this latter work is but little known and rarely consulted. This illustration has been restored to its original vibrancy by enhancing colors and removing unwanted marks. A monograph of the Trochilidæ, or family of humming-birds was published between 1849 and 1887 by English ornithologist John Gould. This monumental work depicts and describes all the known species of hummingbirds at the time - comprising 418 lithographic plates and information on 537 species."