CADDO. A tribe, a confederacy and a stock of American In dians west of the Mississippi river are known by this name. The Caddoan stock occupied three territories. The largest, that of the Caddo or Hasinai confederacy and their kinsmen, embraced most of the drainage of Red River plus adjacent streams, in Louisiana, Arkansas, Oklahoma and Texas. The second, in Kansas and Ne braska, and the third, on the Missouri in the Dakotas, held re spectively the Pawnee and Arikara (q.v.). The surviving tribes or bands of the first division are the Caddo, Wichita, Kichai, Tawa koni, Waco, reduced to less than 1,000 all told. Tribes now extinct or merged were the Anadarko, Hainai, Nacogdoches, Natchitoches, Yatasi. The Caddoan groups were agricultural and lived in vil lages of thatched houses. In general customs they were interme diate between the settled tribes of the lower Mississippi and Gulf states and the moving bison hunters of the Plains. They became known to the Spaniards and French in the 17th century, and the usual reduction in numbers soon followed contacts.