A monograph of the Trochilid, or family of humming-birds /.London :Printed by Taylor and Francis ;1861 [i.e. 1849-1861].biodiversitylibrary.org/page/35246493
Purple-bibbed Whitetip (Urosticte benjamini). Female. Tandayapa Lodge, Tandayapa Valley, western Andes, Ecuador. (Note this was previously mis-identified as a Green-crowned Brilliant - another of my not-so-Brilliant mistakes!! - Thanks again rasmus_boegh for pointing this out)