C. Newbury — Two Kinyaga lineages. Kinyaga, in S.W. Rwanda, did not corne under the direct authority of the mwami's administration before the end of the 19t.l1 cen-tury. This, as shown by the study of two lineages (one Tutsi, one Hutu), brought over some drastic changes in the kinship structure. Lineages lost their cohesion when their members shared the new roles and functions. The hierarchical cleavages lines eut through the kin groups, and a new vertical stratification took place between Tutsi and Hutu, later on to be strengthened by the colonial rulers whose basic aims were similar to those of the Tutsi.