102 RHINOPITALCU S 
GENUS II. RHINOPITHECUS. RETROUSSE-NOSED 
LANGURS. 
LS ce; Be; M B=3e. 
RHINOPITHECUS A. Milne-Edw., Recherch. Mamm., 1872, p. 233, 
pls. XXXVI, XXXVII. Type Rhinopithecus roxellane A. 
Milne-Edwards. 
Nasal portion of face depressed; end of nose turned upward; 
thick ruff surrounds face; humerus longer than radius. 
But four species of this genus are known, all of large size, and of 
striking coloration. They are inhabitants of northwestern China, 
Tonkin and eastern Thibet, rare in collections, and of their habits 
nothing is known. Two of the species, R. ROXELLANZ and R. BIETI 
were described by A. Milne-Edwards in 1870 and 1898 respectively, 
and the third R. BrELicH1 by O. Thomas in 1903, and the fourth, R. 
AVUNCULUS by G. Dollman in the present year. The geographical 
range of all the species is but imperfectly known. 
KEY TO THE SPECIES. 
A. Nose small, upturned, depressed in center; tail long. 
a. No white patch between shoulders. | 
a. fPelage orange, rufous, and grayish black...R. roxellane. 
b,, Pelage black, brown and white... «ss... ocean R. bieti. 
b. With white patch between shoulders ............ R. brelichi. 
c. Patch on each side of tail at root above ........ R. avunculus. 
RHINOPITHECUS ROXELLANZ (A. Milne-Edwards). 
Semnopithecus roxellane A. Milne-Edw., Compt. Rend., LXX, 
1870, p. 341; Schleg., Mus. Pays-Bas, Simiz, 1876, p. 65; 
Anders., Zool. Res. Exped. Yunnan, 1878, p. 43; Forbes, 
Handb. Primates, II, 1894, p. 139. 
Rhinopithecus roxellane A. Milne-Edw., Rech. Mamm., 1868-74, 
p. 233, pls. XXXVI, XX XVIII; Blyth, Mamm. Burma, 1875, 
p. 11; De Winton, Proc. Zool. Soc. Lond., 1889, p. 572. 
MOUPIN LANGUR. 
Type locality. Eastern Thibet. Type in Paris Museum. 
