BAYMAS—1754; [Ortega], Apostolicos Afanes, p. 377. GAYAMA—1826 (?); Pike (Balbi), (in Pimentel, Lenguas Indígenas, tomo II, p. 234). GUAIMA—1861; Buckingham Smith, Heve Grammar, p. 7. GUAIMAS—1702; Kino, map (in Stocklein, Der Neue Welt-Bott). GUAYAMAS—1757; Venegas, Noticias, tomo II, p. 79. GUAYMA—1701; Juan Maria de Sonora, Report (Documentos para la Historia de Mexico, série 4, tomo V, p. 154). GUAYMAS—1700; Juan Maria de Sonora, Report (Documentos para la Historia de Mexico, série 4, tomo V, p. 126). GUAYMI—1882; Bancroft Works, vol. III, (Native Races, vol. III), p. 704. GUAYMIS—1844; Mühlenpfordt, Republik Mejico, Band I, p. 210. GUEIMAS—1748; Villa-Señor, Theatro Americano, p. 401. GUEYMAS—1748; Villa-Señor, Theatro Americano, p. 402. GUIAMAS—1763; [Nentwig?], Rudo Ensayo, p. 229. GUIMIES (?)—1701; Kino, map (Bancroft, Works, vol. XVII, 1889, p. 360). _Upanguayma Tribe_ HOUPIN GUAYMAS—1829; Hardy, map. JUMPANGUAYMAS—1860; Velasco, Bol. Soc. Mex. Geog. y Estad., tomo VIII, p. 292. JUPANGUEIMAS—1748; Villa-Señor, Theatro Americano, p. 401. OPAN GUAIMAS—1763; [Nentwig?], Rudo Ensayo, p. 229. UPANGUAIMA—1864; Orozco y Berra, Geografía de las Lenguas, p. 42. UPANGUAIMAS—1878; Malte-Brun, Congrès International des Américanistes, tome II, p. 38. UPANGUAYMA—Synthetic form. UPANGUAYMAS—1882; Bancroft, Works (Native Races, vol. I, p. 605). UPAN-GUAYMAS—1890; Bandelier, Investigations in the Southwest, p. 75. Possibly the name _Cocomagues_ (1864, Orozco y Berra, Geografía de las Lenguas, p. 42), or _Cocomaques_ (1727, Rivera, Diario y Derrotero, I. 1514-1519) should be introduced among the synonyms of the Seri, but in the absence of definite information it may perhaps better be left unassigned.[236] [236] These names seem rather to be Yuman; cf. _Coco_pa, _Coco_nino, _Coco_maricopa, _Ko_hun, etc. Of the four tribes assigned to the stock, the Upanguayma have been extinct probably for more than a century; the Guayma may survive in a few representatives probably of mixed blood and adopted language; the Tepoka have never received systematic investigation, but appear to survive in limited numbers on the eastern coast of Gulf of California about the embouchure of the Rio Ignacio sand-wash; while the Seri alone continue to form a prominent factor in Sonoran thought. EXTERNAL RELATIONS