(syn. Cercotrichas Ϯ White-browed Scrub Robin C. leucophrys) Gr. ερυθρος eruthros red; -πυγιος -pugios -rumped < πυγη pugē rump; "Genus ERYTHROPYGIA. Bill moderate, slender, curved, and compressed towards the point, upper mandible slightly notched; nostrils basal, above membranaceous; rictus slightly bristled; wings short, round, fourth and fifth quills longest; tail rounded; tarsi moderate, acrotarsia divided; claws moderately curved. Erythropygia pectoralis. Top of head grey-brown; back dull brown; rump and tail coverts rufous ... Inhabits the country between the Orange River and Kurrichaine. Erythropygia Paena. Top of head grey-brown; back pale rufous brown; rump and tail coverts bright rufous ... Inhabits the country between Latakoo and the Tropic." (A. Smith 1836); "Erythropygia A. Smith, 1836, Rep. Exped. Centr. Africa, p. 46. Type, by subsequent designation (Sharpe, 1883, Cat. Birds Brit. Mus., 7, p. 72), Erythropygia pectoralis Smith = Sylvia leucophrys Vieillot." (Ripley in Peters 1964, X, 18). Var. Crythropygia.