68 MAMMALS OF THE PACIFIC WORLD 



troduced on other islands. On account of its extensive range 

 and isolation on many of these islands, numerous forms have 

 developed and been described. These differ from one another 

 chiefly in size and color. The crab-eating macaque has the 

 longest tail of those discussed — almost as long as the length 

 of the head and body. This monkey, like all macaques, has 

 cheek pouches into which it stuffs food to be eaten later at 

 leisure. The color is variable, generally grayish brown to 

 golden brown, with underparts lighter, the hair being dark at 

 the roots. Individual hairs are ringed with yellow, brown, or 

 black. The face is generally brown, the eyelids bluish white, 

 the hands, feet, and ears black. The hair of the crown is di- 

 rected backward ; it occasionally forms a slight crest or whorl, 

 less prominent than in the macaques of southern India. The 

 measurement of head and body of large males may reach two 

 feet, of the tail about eighteen inches. Females are smaller. 



The crab-eating macaques are commonly found among man- 

 groves near the shore and seek their food along the tidal flats 

 at ebb-tide. As the name implies, they are fond of crustaceans. 

 They swim well and of ten, visit small islands offshore. 



The Formosan Rock Macaque (Macaca cyclopsis) is the 

 only monkey found on Formosa. It is related to the rhesus 

 macaque of southern China, Burma, and India, although it 

 lacks the reddish tone of that animal. Its color is olive-gray 

 or slaty, the hairs finely flecked with yellow, with darker legs 

 and a black line along the top of the tail. The head and body 

 length is about eighteen inches ; the tail about ten. These mon- 

 keys live among the rocks along the coast ; they appear to be 

 rarer in the inland forest. 



The Celebes or Moor Macaque (Macaca maura) is a large 

 heavy-set macaque with a very short tail. The color is brown- 

 ish black but some specimens are lighter. The face is black, and 

 the lower parts, rump, and lower legs gray. The total length 

 is about twenty-two inches, and the tail about one inch. On the 

 Eastern Peninsula near Tonkean, a form has been described 



