Keywords: MonographTrochi2Goul 0030.jpg Campylopterus ensipennis Gould John A monograph of the Trochilidae or family of humming-birds http //archive org/details/monographTrochi2Goul Volume 2 1861 1861 Creator John Gould Creator Henry Constantine Richter PD-old-100 Henry Richter A Monograph of the Trochilidae Volume 2 Campylopterus ensipennis |