In spite of the excellent opportunity for field observation of Indian monkeys especially near temples and villages very little is known and published of their habitats and social behavior, contrariwise, there are exact observations on monkeys of other countries in the wild state e.g., on howling monkeys, on red spider monkeys, and on gibbons and on baboons .We therefore took the opportunity during our trip through India under leadership of Prof. B.Rensch in spring 1953 to collect some more information about Indian monkeys .We had particularly good facilities for observation at Byrankuppe about 45 miles from Mysore City, where two troops of Macaca radiata lived close to our forest bungalow.