Hairy Hermit (Glaucis hirsutus), John Gould It is very generally admitted by Trochilidists that there are two most nearly allied species of Glaucis, which have been respectively named hirsutus and Mazeppa; the former name having been given by Gmelin to a Brazilian bird, and the latter by Lesson to a species inhabiting Guiana; but it yet remains to be seen whether they are really distinct. 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."