Gramática do Kamaiurá, Língua Tupi-Guarani do Alto Xingu Dr. Seki's book on the Kamayurá is the first comprehensive grammar of an Indian language by a Brazilian since Anchieta's description of Tupinambá in 1595." Gramática do Kamaiurá, Língua Tupi-Guarani do Alto Xingu Gramática do Kamaiurá, Língua Tupi-Guarani do Alto Xingu, by Lucy Seki, is an authoritative and comprehensive description of Kamayurá, an indigenous language of Brazil. Kamayurá is spoken by the people of the same name, which number about 290 as of 2005, living in two villages in the Xingu National Indian Reservation, Brazil. The book has 482 pages of text, plus 17 pages of color photos of the
Xingu-Tocantins-Araguaia moist forests many smaller blackwater rivers including the Pacajá and Anapu tributaries of the Amazon River, the Bacajá and Fresco tributaries of the Xingu, and the Parauapebas and Catete tributaries of the Tocantins. The ecoregion is in the neotropic ecozone and the tropical and subtropical moist broadleaf forests biome. The Köppen climate classification is "Am": equatorial, monsoonal. Temperatures are fairly steady throughout the year, slightly higher in April and slightly lower in July. Average temperatures range from , with a mean of . The region is drier than the ecoregions further to the west. In the middle Xingu annual rainfall is .