A Pai Ute Family at Home. A Pai Ute Family at Home. Photograph by J.K. HILLERS, U.S. Colo. Riv. Exp. The Arapahos were said to range into Brown’s Park; the Utes were all along the Wonsits Valley and below it on both sides of the river. Then came the Navajos, ranging up to the San Juan and above.[10] On the north side, below the San Juan, were the various bands of Pai Utes, while on the south were the Puebloan tribes, with the Apaches, Suppais, Wallapais, etc., while still below came the Mohaves, Cocopas, and Yumas, with, on the Gila, the Pimas, Papagos, and Maricopas. The 250,000 square miles of the basin were variously apportioned amongst these tribes, but their territorial claims were usually well defined. [10] For notes on the distribution of tribes see the _Seventh Ann. Rep, Bu. Ethnology; Wheeler’s Report_, vol. i.; _Report of Lieut. Ives, Works of H. H. Bancroft_, and _Garces_, by Elliott Coues. The Barrel Cactus. The Barrel Cactus. Pencil sketch by F.S. DELLENBAUGH. The vegetation of the area, especially that of the lower half, possesses singular characteristics quite in keeping with the extraordinary topography. Here flourishes the cactus, that rose of the desert, its lovely blossoms red, yellow, and white, illuminating in spring the arid wastes. The soft green of its stems and the multiplicity of its forms and species, are a constant delight. It writhes and struggles across the hot earth, or spreads out silver-spined branches into a tree-like bush, or, in the great pitahaya, rises in fierce dignity like a monitor against the deep blue sky. And the yuccas are quite as beautiful, with their tall central rods so richly crowned with bell-like blossoms, the fantastic _Clistoyucca arborescens_, or Joshua tree, being more in harmony with the archaic landscape than any other plant there. As the traveller crosses one of the open forests of this tree, which is often twenty-five feet high, the more distant ones appear to beckon like some uncanny desert octopus yearning to draw him within reach of those scrawny arms. The blossom of this monstrous growth is a revelation, so unexpected is it. A group as large as one’s head, pure white, on the extremity of a dagger-covered bough, it is like an angel amidst bayonets. The pitahaya, often more than thirty feet high and twelve to twenty-four inches diameter, is a fit companion for the Joshua, with an equally startling blossom. Vegetation of the Southwest. Vegetation of the Southwest. Photograph by E.O. BEAMAN.