R. G. Latham, Man and His Migrations
“ The Guarani alone cover more land than all the other tribes between the Amazons, the Andes, and the La Plata put together: but it is not certain that their area is continuous. In the Bolivian province of Santa Cruz de la Sierra, and in contact with the Indians of the Missions and the Chaco, we find the Chiriguanos and Guarayos—and these are Guarani. Then as far north as the equator, and as far as the river Napo on the Peruvian frontier, we find the flat-head Omaguas, the fluviatile mariners (so to say) of the Amazons; and these are Guarani as well. ”
