_Population._--More than six hundred Yuchi reside in northeastern Indian Territory, upon the Arkansas River, where they are usually classed as Creek. Doubtless the latter are to some extent intermarried with them, but the Yuchi are jealous of their name and tenacious of their position as a tribe. WAIILATPUAN. = Waiilatpu, Hale, in U.S. Expl. Exp., VI, 199, 214, 569, 1846 (includes Cailloux or Cayuse or Willetpoos, and Molele). Gallatin, after Hale, in Trans. Am. Eth. Soc., II, pt. 1, c, 14, 56, 77, 1848 (after Hale). Berghaus (1851), Physik. Atlas, map 17, 1852. Buschmann, Spuren der aztek. Sprache, 628, 1859. Bancroft, Nat. Races, III, 565, 1882 (Cayuse and Mollale). = Wailatpu, Gallatin in Schoolcraft, Ind. Tribes, III, 402, 1853 (Cayuse and Molele). X Sahaptin, Latham, Nat. Hist. Man, 323, 1850 (cited as including Cayús?). X Sahaptins, Keane, App. Stanford’s Comp. (Cent. and So. Am.), 474, 1878 (cited because it includes Cayuse and Mollale). = Molele, Latham, Nat. Hist. Man, 324, 1850 (includes Molele, Cayús?). > Cayús?, Latham, ibid. = Cayuse, Gatschet in Mag. Am. Hist., 166, 1877 (Cayuse and Moléle). Gatschet in Beach, Ind. Misc., 442, 1877. Derivation: Wayíletpu, plural form of Wa-ílet, “one Cayuse man” (Gatschet). Hale established this family and placed under it the Cailloux or Cayuse or Willetpoos, and the Molele. Their headquarters as indicated by Hale are the upper part of the Walla Walla River and the country about Mounts Hood and Vancouver. GEOGRAPHIC DISTRIBUTION. The Cayuse lived chiefly near the mouth of the Walla Walla River, extending a short distance above and below on the Columbia, between the Umatilla and Snake Rivers. The Molále were a mountain tribe and occupied a belt of mountain country south of the Columbia River, chiefly about Mounts Hood and Jefferson. PRINCIPAL TRIBES. Cayuse. Molále. _Population._--There are 31 Molále now on the Grande Ronde Reservation, Oregon,[102] and a few others live in the mountains west of Klamath Lake. The Indian Affairs Report for 1888 credits 401 and the United States Census Bulletin for 1890, 415 Cayuse Indians to the Umatilla Reservation, but Mr. Henshaw was able to find only six old men and women upon the reservation in August, 1888, who spoke their own language. The others, though presumably of Cayuse blood, speak the Umatilla tongue. [Footnote 102: U.S. Ind. Aff., 1889.] WAKASHAN FAMILY.