represented in sacred dance, [59];

by male and female ruler, [62];

development of idea, [67];

twin brothers as rulers in Yucatan, [68];

Montezuma, impersonation of, [73], [77], [78];

in Peruvian symbolism, [134];

the “Beloved Twain” of the Zuñi, [200];

Quetzalcoatl and Kukulcan, [223];

dual ruler at Copan, [228];

in Quirigua, [232];