Purple-throated Humming-bird (Trochilus Alexandri), John Gould The native countries of this modestly-coloured, but pretty species of Trochilus are Mexico, California and Texas, and it will be seen from the following note by Mr. Cassin, that the United States also lays claim to it as part of its fauna. 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."