The Mohave are of Yuman stock. They have lived for more than three centuries in the bottomlands of the Colorado river where the present states of California, Nevada, and Arizona adjoin. Down-stream to the mouth of the Colorado were half a dozen kindred but often hostile tribes, of whom the Yuma proper are the best known survivors. The mountains to the east, in Arizona, were held by still other Yuman groups—Yavapai, Walapai, Havasupai—of rather different habits from the river tribes. To the north and east, the deserts of Nevada and California were occupied by sparse groups of Shoshonean lineage.