Sallé’s Hermit (Phaëthornis Augusti), John Gould In form and general contour the Phaëthornis Augusti is so nearly allied to the P. Pretrei, that were skeletons of both placed side by side, I apprehend it would be most difficult if not impossible to distinguish one from the other; still I have no doubt as to their specific value, and I am quite sure that no ornithologist would question their being quite 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."