The Anuak are a Nilotic people of the south-east of the Sudan and adjacent Ethiopia. They may number between 30,000 and 40,000 people, of whom at least two thirds live in Ethiopia, where a number of difficulties prevented me from visiting them. As described in Professor Evans-Pritchard's writings, two somewhat different political systems and forms of rule and leadership are found in the villages of Anuakland. In the south-east, several ecological and other circumstances have favoured the spread of the influence of a noble clan, members of which reign in villages which, according to tradition, were at one time politically isolated from each other and autonomous under local headmen. These villages of the noble clan are drawn, through the nobles associated with them, into competition for the acquisition of a single set of royal emblems, of which the most important are several ancient bead-necklaces. It seems that the influence of this noble clan has spread and is even now spreading farther among the villages of Anuakland, though in the land as a whole most villages are still under the sway of headmen chosen from lineages which traditionally provided them. It is with the organization of these villages, and the way in which their members change their headmen, that this paper deals.