556 ANNUAL REPORT SMITHSONIAN INSTITUTION, 191*7. 



" Soko " does all sorts of unexpected tricks and is a creature of 

 extreme moods. At times he is very grave and serious, and again, 

 especially if he has an appreciative audience, he is bubbling over 

 with the joy of life and spins round and round on his back and 

 shoulders or turns somersaults repeatedly. During the warmer 

 months he occupies pleasant quarters out-of-doors where he has a dry 

 and cosy sleeping room with a large cage; and at that season he 

 enjoys daily walks about the grounds and many rides on the watch- 

 man's bicycle. 



OLD WORLD MONKEYS. 



With few exceptions the Old World monkeys are all exhibited in 

 the building known as the monkey house. The exceptions are hardy 

 species which seem unmindful of our coldest winter weather and 

 thrive in unheated outdoor cages, where they are provided of course 

 with snug and comfortable sleeping quarters. These " fresh air " 

 monkeys include the rhesus monkey (Macaca rhesus), a social species 

 of northern India; the brown macaque (Macaca speciosa), of Upper 

 Burma and Cochin China, in which the tail is nearly obsolete; the 

 Japanese monkey (Macaca fuscata), a long- furred, naked-face, short- 

 tailed species; and the chacma (Papio Q)orcarius), a South African 

 baboon of large size and great strength. A full grown male of this 

 powerful baboon is said to be a match for a leopard; and as the 

 animals usually live in troops, so great a number as 100 being some- 

 times associated in this manner, they at times are responsible for 

 great depredations to crops, and have been known to kill lambs and 

 other stock. 



In the monkey house and the annexed outdoor j-ards for summer 

 use are shown a variety of the Old World species. A number of 

 forms of macaques, related to those mentioned above, are usually 

 here. These include the bonnet monkey (Macaca sinica), a native of 

 southern India ; the pig-tailed monkey (M. nemestrina) of the Malay 

 region; the Moor macaque (Cynopithecus mavxrus) from Celebes; 

 and others. The mangabeys, a tropical African group of long-tailed, 

 forest-loving monkeys is represented by the sooty mangabey (Ger- 

 cocebiis fuliginosus) , an obscurely colored but very active species. 



The guenons form the largest group of the Primates and exhibit 

 remarkable diversity in coloration and color pattern. They are at- 

 tractive and very interesting monkeys with slender bodies and long 

 limbs and tails. Some of the species are oddly and brilliantly 

 colored. The group includes about 80 forms and is native to Africa ; 

 but two species (the mona and the green guenon) have been intro- 

 duced into the West Indies and are perfectly established on some 

 of the islands. Attractive species of this genus shown in the monkey 



