Cyrtostomus

 Cyrtostomus  is a genus of African sunbirds. Its members were formerly in Cinnyris. Its members are:
 * Olive-backed Sunbird, Cyrtostomus jugularis
 * Apricot-breasted Sunbird, Cyrtostomus buettikoferi
 * Flame-breasted Sunbird, Cyrtostomus solaris