Purple-tailed Comet (Sparganura glyceria), John Gould Being in possession of a female specimen of Sparganura glyceria, I think it advisable, both in the interests of the Trochilidist and of those who study the subject less scientifically, to figure it in this Supplement, and at the same time to associate with the drawing one of the male, back and front, which has already been depicted in the third volume of the ‘Humming-birds.’ 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."