Swallow-tail (Eupetomena hirundinacea), John Gould This species being the most swallow-like member of the entire family of Trochilidæ, I have in this instance departed from the rule of priority and adopted the appropriate name of hirundinacea assigned to it by M. Lesson, instead of retaining the indefinite one of macrourus originally bestowed by Gmelin. 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."