In accord with AOS-SACC (Proposals 780 and 781) and AOS-NACC (Chesser et al. 2020b), the sequence of hummingbirds in the group previously listed between Chlorostilbon and Hylocharis is revised, based primarily on McGuire et al. (2014) and Hernández-Baños et al. (2020). In accord with AOS-SACC (Proposal 781), change the scientific name of Versicolored Emerald from Amazilia versicolor to Chrysuronia versicolor, based on genetic evidence that the traditional genus Amazilia is not monophyletic (McGuire et al. 2014), and Versicolored Emerald belongs to a disparate group of species for which the oldest available genus name is Chrysuronia (Stiles et al. 2017a, b).