Green-throated Mango (Lampornis gramineus), John Gould So much confusion exists respecting the synonymy of this species, that, after instituting the most rigid examination, I am compelled to give up the attempt to unravel it, and content myself with enumerating those terms only which, it appears to me, certainly have reference to the present bird. 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."