Females.—Similar to the males; the young of both sexes more brightly coloured than the adults. Gestation in the Pig-tailed Macaque lasts, according to Dr. Blanford, seven months and twenty days. A singular variety of a female from the Baram river, in Sarawak, Borneo, is of a dark fulvous above, darker in the mesial line, much paler on the lower surface, and growing nearly white on the middle of the chest.
Distribution.—Tenasserim, and chiefly in the southern parts of that province; Southern Burmah, the Malay peninsula, Bangka, Sumatra, Java, and Borneo.
Habits.—The Pig-tailed Macaque inhabits the thick jungles in the lower country, living in considerable companies, and feeding on fruits, seeds, and insects. "When young, these Monkeys are easily tamed," as Mr. Charles Hose records, "and in some places they are used to climb the cocoa-nut trees to throw down the nuts, the Monkeys having been taught to throw down only the ripe ones." This observation as to its collecting cocoa-nuts was also made many years ago by Sir Stamford Raffles in Sumatra. When old, the males are very savage, and will attack a Dog when provoked.
VIII. THE LION-TAILED MACAQUE. MACACUS SILENUS.
Simia silenus, Linn., Syst. Nat., i., p. 35 (1766); Schreber, Säugeth., i., p. 87, pl. xi. (1775).
Cercopithecus veter, Erxl., Syst. Regn. An., p. 24 (1777).
Simia ferox, Shaw, Gen. Zool., i., p. 30, pl. xvi. (1800).
Papio silenus, Geoffr., Ann. Mus., xix., p. 102 (1812); Kuhl, Beitr. Zool., p. 18 (1820).
Macacus silenus, Desm., Mamm., p. 63 (1820); Anders., Zool. Exped. Yun-nan, p. 93 (1878; with full synonymy); Blanford, Faun. Brit. Ind., Mamm., p. 16, fig. 5; Schl., Mus. Pays-Bas, vii., p. 109 (1876).
Silenus veter, Gray, Cat. Monkeys, Brit. Mus., p. 32 (1870).