PYGATHRIX 95 



Geogr. Distr. Assam and hills to the south of the valley, Sylhet, 

 Tipperah, Chittagong, northern Arakan and part of Upper Burma, 

 (Blanford). 



Genl. Char. Allied to P. entellus but smaller. 



Color. Top of head, hair brown ; long black hairs on forehead ; 

 upper back, hair brown graduating into pale gray, and then into a 

 cream buff on the rump ; sides of head tawny, this color extending 

 on to the shoulders, along the edge of the arms and lower sides of 

 body; arms pale yellowish gray, hands blackish brown, under side of 

 body, throat, inner side of arms and legs orange buff ; feet dark gray ; 

 tail pale gray, graduating into purplish black on apical third. Ex 

 specimen Calcutta Museum. 



Measurements. Total length, 1,690; tail, 1,030; foot, 195, (skin). 

 Skull : total length, 1 16.2 ; occipito-nasal length, 96.3 ; intertemporal 

 width, 50.4; width of braincase, 65.5; Hensel, 77.2; zygomatic width, 

 86.3; median length of nasals, 11 ; palatal length, 36; length of upper 

 canines, 18.4; length of upper molar series, 30.7; length of mandible, 

 81.6; length of lower molar series, 39. 



In some adult males the upper parts are gray to the tail, no cream 

 buff or any other color showing. 



Pygathrix hypoleuca (Blyth). 



Semnopithecus hypolencus Blyth, Journ. Asiat. Soc. Beng., X, 

 1841, p. 839'; XII, LS43, p. 170; XIII, 1844, pp. 470, 476; 

 XVI, 1847, pp. 733, 1271, pi. XXVI, fig. 1 ; Id. Ann. Mag. 

 Nat. Hist., XX, 2nd Sen, 1851, p. 313; Horsf., Cat. Mamm. 

 Mus. E. Ind. Co., 1851, p. 14; Wagn., Schreb., Saugth. 

 Suppl., V, 1855, p. 31 ; Reichenb., Vollstand. Naturg. Affen, 

 1862. p. 99, figs. 231, 232; Anders., Zool. Res. Exped. Yun- 

 nan, 1877, p. 20: Id. Cat. Mamm. Ind. Mus. Calc, 1881, p. 

 40; Blanf., Faun. Brit. Ind., 1891, p. 33; Forbes, Handb. 

 Primates, II, 1894. p. 110. 



Semnopithecus johni var. Martin, Manimif. Anim., 1841, p. 489; 

 Gray, Cat. Monkeys, Lemurs and Fruit-eating Bats, Brit. 

 Mus., 1870, p. 14. 



Semnopithecus dussumieri I. Geoff., Compt. Rend., XV, 1842, p. 

 719: Id. Archiv. Mus. Hist. Nat. Paris. II, 1843, p. 538, pi. 

 XXX; V, 1852, p. 537; Id. Cat. Primates, 1851, p. 13; Gerv., 

 Hist. Nat. Mamm., 1854, p. 61, pi. IV; Dahlb., Stud. Zool. 

 Fam. Reg. Anim. Nat., fasc. I, 1856, pp. 87, 89; Reichenb., 



