A town of Brazil, capital of the province of Matto Grosso, on the left bank of the Cuyaba river, lat. 15° 26' S., lon. 56° W., 980 m. N. W. of Rio de Janeiro; pop. about 10,000. The streets are paved, but are very irregular, and the houses are poorly built. It contains several churches, a hospital, a lazaretto, a Latin school, a school of philosophy, and other educational institutions, and the public buildings of the province. It is the centre of a rich gold and diamond district, but the mines are now mostly abandoned on account of the cost of working them, the stones and the precious metal being no longer found on the surface. Valuable deposits of copper and iron also are found in the neighboring hills. The soil is of wonderful fertility, and most of the inhabitants now give their attention to agriculture and cattle raising. Large quantities of hides and of ipecacuanha are sent thence to Rio de Janeiro by caravans of mules. II. A river of Brazil, which rises in the district of Diamantino, in the Parecis mountains, not far from the sources of the Paraguay, and flows in a generally southern direction until it joins the Paraguay in lat. 18° S., lon. 57° 50' W. .It is navigable for about two thirds of its length, and forms an important channel of communication for the town of Cuyaba, although its current is rapid and headlong for 60 m. below that place.

Above the town it is navigable only for canoes, being much broken by rapids.