A monograph of the Trochilidae, or family of humming-birds

Intended as a record of hummingbird species discovered since the publication of Gould's original 5-volume monograph (A monograph of the Trochilidae, or family of humming-birds) in 1861; describes 122 species in all. There are 42 leaves of letterpress containing descriptions of species that are not illustrated; contains also title page, preface by R. Bowdler Sharpe, contents and list of plates (4 unnumbered leaves at beginning).