Note: Do not rely on this information. It is very old.
Maravars
Maravars, an outcast people, South India, in Madura and from Ramnad to Cape Comorin; are of extremely dark complexion, and although now speaking a Tamil (Dravidian) dialect, are not Dravidians, but survivors of the aboriginal Negrito population of India. (E. Callamand, Tribes des Maravas, in Rovue d'Anthropologic, 1878.)