1431 inhabitants divided among 4 major pueblos (Alamos, Matape, Rebeico, Nacori). Frontier area encompassing various Opata groups, Lower Pimas. Notes presence Jesuit collegio in Matape. States inhabitants speak hogue, work in/sell crops to mines/haciendas region. Mentions group 70 people from hacienda Santiago de Toapa living in Pueblo. Inhabitants Nacori speak hoba among themselves, hegue with others. (different Opata dialects?) Otherwise, customs, religious devotion similar to Matape. Possess band musicians with trumpets, oboes, chabeboa, flutes, harp, guitar, bassoon. Inhabitants Alamos speak hegue, also have musical band. 30 of 92 families Pimas in process of forming new Pueblo 3 leagues away. Inhabitants Rebeico speak ova, congregated there from very distant lands. Live in flat-roofed houses. Shortage of wood for construction purposes, especially building churches, noted for all pueblos Partido. Geographical locations noted. (T. Sheridan) (1976)