THE LANGURS, 1 23 



mountain jungles, and forms one of the characteristic noises 

 of these lofty situations. It was first captured by Dr. Kelaart 

 in the woods near Nuera-ellia, and from its peculiar appearance 

 it has been named P. itrsmus by Mr. Blyth." 



XV. THE DUSKY LANGUR. SEMNOPITHECUS OBSCURUS. 



Semnopithecus obsairus, Reid, P. Z. S., 1837, p. 14; Martin, 



Mammif. An., p. 486 (1841); Murie, P. Z. S., 1865, 



p. 742; Gray, Cat. Monkeys Brit. Mus., p. 14 (1870); 



Schl., Mus. Pays-Bas, vii., p. 49 (1876); Anders., Zool. 



Res. Yun-nan Exped., p. 25 (1878 ; with full synonymy); 



Thomas, P. Z. S., 1886, p. 66] Blanford, Faun. Brit. Ind., 



Mamm., p. 41 (1891). 

 Semnopithecus leucomystax, Miill. and Schl., Verhandl., p. 59 



(1839-44). 

 Semnopithecus albocinereus, Less., Sp. Mammif., p. 65 (1840). 

 Preshytis obsaira, Gray, Hand. List Mamm. Brit. Mus., p. 3 



(1843) ; Blyth, J. A. S. Beng., xiii., p. 467 (1844). 

 Semnopithecus halonifer^ Cantor, Proc. Linn. Soc, 1845, p. 235. 

 Characters. — Hair on crown not radiating ; longer at the 

 back, forming a tuft of yellowish-white. Body blackish-brown, 

 darker on the forehead, sides of face, sides of body and limbs ; 

 hands and feet black ; nape of neck, and along the middle of 

 back, brownish ; tail brownish, not tufted ; under surface and 

 inside of Hmbs not so dark as the back or sides ; face black, 

 but the mouth and eyelids whitish ; length of body, 2 1 inches ; 

 of tail, 32 inches. 



Female. — Slightly browner than the male. 

 Youn^. — Bright golden-red, but very soon changing to the 

 colour of the adult. 



