1. Kinzey, W. G., Rosenberger, A. L., Ramirez, M., Nature, 255, 327–328 (1975).
2. Napier, J. R., and Napier, P. H., Handbook of Living Primates (Academic, New York, 1967).
3. Machado, A., and Leite, O. C., Bol. Inst. Quim. Agric., 50, 7–15 (1957).
4. Coimbra-Filho, A. F., and Mittermeier, R. A., in Conf. Biology and Conservation of the Callitnchidae, Front Royal, Virginia (in the press).
5. Fetter, J. J., et al., La Terre et la Vie, 118 (3), 287–327 (1971).