Many genus-level changes to the classification of Trochilini were enacted in Stiles et al. (2017b). We have since found that two further genera therein emended each require replacement names. The first of these requiring a replacement name is Uranomitra Reichenbach, 1854 [March], which is herewith interpreted as an additional synonym of Saucerottia Bonaparte, 1850, along with its junior synonym Cyanomyia Bonaparte, 1854a [May]. We show that both must have the same type species, as originally designated, Trochilus quadricolor Vieillot, 1822 = Ornismya cyanocephala Lesson, 1829. The second case in which a replacement name is required is Leucolia Mulsant E. Verreaux, 1866, herewith interpreted as an additional synonym of Leucippus Bonaparte, 1850, with the same type species, Trochilus fallax Bourcier, 1843. We herein propose replacement names for both Uranomitra and Leucolia.
Keywords: Aves, genus-group replacement names, type species.