Northern group: Opata. Papago. Pima. Southern group: Cahita. Cora. Tarahumara. Tepeguana. _Population._--Of the above tribes the Pima and Papago only are within our boundaries. Their numbers under the Pima Agency, Arizona,[76] are Pima, 4,464; Papago, 5,163. [Footnote 76: According to the U.S. Census Bulletin for 1890.]