+Pĭskwaus+ or +Winä′tshipûm+ (Salishan stock).—_Synonyms_: Piscaous, Piscous, Pisquose. The name by which this tribe is commonly known is properly the name of a fishing place on Wenatchee river, and is probably Salishan, but may be from the Yakima _pĭsko_, signifying “a bend in the river.” The Yakima call the river Winätshi, signifying a “river issuing from a cañon,” and the tribe Winätshipûm. The Piskwaus proper, on Wenatchee river, with their connected bands or tribes living in the same neighborhood, west of the Columbia in Kittitas and Okanogan counties, Washington, are a southern extension of the Mitaui and speak the same language. Under the name of Piskwaus, Stevens includes “the Indians on the Columbia between the Priests’ and Ross rapids, on the Pisquose or Winatshapam river; the Enteatkeon, Chelaun lake, and the Mithaw on Barrier river. The name of Pisquouse, however, properly refers to a single locality on the river known to the Yakamas as Winatshapam. The Pisquouse themselves, as has before been remarked, are so much intermarried with the Yakamas that they have almost lost their nationality. These bands were formerly all united under one principal chief, Stalkoosum, who is said to have been a man of great note among them. He was killed a few years since in a fight with the Blackfeet, since which there has been no head of the tribe.” (_Stevens, Comr. Rept., 1854._) The Piskwaus and smaller connected tribes took part in the Yakima treaty of 1855, but do not live on the reservation. Most of them live on the Wenatchee and the north branch of Yakima river in Kittitas county. They are all Catholics. There is no official statement of their number. Smaller tribes or bands connected with the Piskwaus proper and speaking the same language are: 1. +K̔′tătäs+, K̔tătäs-‛lĕ′ma, Ketetas (Stevens), Pshwa′năpûm (Yakima name), Shanwappoms (Lewis and Clark). K̔′tătäs signifies “a shoal,” _‘lĕ′ma_ being a tribal suffix, and Pshwană-pûm in the Yakima language signifies “shoal people,” the name referring to a shoal in Yakima river at Ellensburg. 2. +Ska′utăl+, or Skaddal (of Lewis and Clark). About Boston creek and Kahchass lake, at the head of Yakima river. 3. +W‛shä′nătu+, or Shallattoos (of Lewis and Clark). The word means “huckleberry” in Yakima, and is applied to a site on Yakima river just above Ellensburg. 4. +Skwa′nănă+, or Squannaroos (of Lewis and Clark). A Yakima word meaning “whirlpool,” and applied to a point on Yakima river about opposite the entrance of Selah creek, the village being on the west bank of the river. This band may possibly speak the language of the Ätanûm, a Shahaptian tribe, whose territory adjoins them.