In accord with AOS-SACC (Proposal 781), change the scientific name of Plain-bellied Emerald from Amazilia leucogaster to Chrysuronia leucogaster, based on genetic evidence (McGuire et al. 2014) that Plain-bellied Emerald belongs to a disparate group of species for which the oldest available genus name is Chrysuronia (Stiles et al. 2017a, b).