560 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



MACACA INSULANA, new species. 



Ti/pe )^/)eei7nen . — Adult male (.skin and skull). No. 104441, United 

 States National Museum. Collected on Chance Island, Mergui Archi- 

 pelago, January 1, 1900, by Dr. W. L. Abbott. Original number, 199. 



General characters. — Like Nacaca adusta^ but with hair of shoulders 

 noticeably longer than that of back; least distance from orbit to 

 gnathion scarcely greater than width of rostrum at base of zygomata. 



Color. — The color does not differ appreciably from that of Macaca 

 adusta^ except that the chest and belly are more heavily grizzled and 

 the hands and feet are noticeably darker than the arms and legs. 



Skull and teeth. — The skull differs from that of Macaca adusta in 

 smaller general size, relatively greater width, and in the shorter 

 rostrum. In fact it suggests a miniature of the Bornean M. hroca., 

 except that the rostrum is less broad anteriorly. Audital bulla^ less 

 inflated than in any of the other forms. Teeth as in 21. adaMct. 



Measurements. — For measurements, see tables, pages 561-562. 



Specimens examined. — Three, all from Chance Island. 



