94 PYGATHRIX 



median length of nasals, 12 ; palatal length, 49.3 ; length of upper 

 molar series, 47.5 ; length of mandible, 91.5 ; length of lower molar 

 series, 44.4. Ex type British Museum. 



The unique specimen, the type of the species, was received by the 

 British ]^luseum from Chumbi, Thibet. It is a female with the feet 

 and most of the tail wanting. It is chiefly remarkable for its woolly 

 coat, quite unlike the pelage of P. schistacea. It probably repre- 

 sents a form dwelling among the higher mountains, possibly mainly 

 to the north of the Himalayas, whose coat has been modified to enable 

 the wearer to successfully withstand the low temperature of those 

 regions. The skull is generally larger than one of a female of P. 

 SCHISTACEA ; it is broader across the orbits, the orbits themselves 

 are much larger, and the orbital ridges greatly arched ; the rostrum is 

 broader at base ; the palate is longer and its roof flatter ; the orbital 

 ridge is more prominent, the depression at the frontal is much greater, 

 and the braincase broader; unfortunately the posterior portion of the 

 skull of P. SCHISTACEA is wanting and a comparison posterior to the 

 pterygoids cannot be made ; the skull of P. lania indicates a larger 

 animal, but it is impossible to say whether this is an individual trait or 

 a specific character. There are five lower incisors but this must be 

 regarded as abnormal, although the teeth are in no wise crowded. 



Pygathrix pileata (Blyth). 



The Assam Entellus Monkey Blyth, Journ. Asiat. Soc. Beng., 



XVI, 1847, p. 732. 

 Semnopithecus pileatus Blyth, Journ. Asiat. Soc. Beng., XII, 1843, 



p. 174; XIII, 1844, p. 467; Wagn., Schreb., Saugth. Suppl., 



V, 1855, p. 30, pi. XXVI ; Horsf ., Cat. Mamm. Mus. E. Ind. 



Co., 1857, p. 7 ; Hutton, Proc. Zool. Soc. Lond., 1867, p. 



946; Schleg., Mus. Pays-Bas, Simiae, 1876, p. 57; Anders., 



Zool. Res. Exped. Yunnan, 1877, p. 13 ; Id. Cat. Ind. Mus. 



Calc, 1881, p. 40; Blanf., Faun. Brit. Ind., Mamm., 1891. 



p. 37, fig. 9 : Forbes, Handb. Primates, II, 1894, p. 103. 

 Presbvtis pileatus ( !) Blyth. Journ. Asiat. Soc. Beng., XVI, 1847, 



pp. 735, 1271, pi. XXVl", fig. 3; XLIV, 1875, p. 2, ext, no.; 



Id. Cat. Mamm. Mus. Asiat. Soc. Beng., 1863. p. 12; Id. 



Mamm. Burma, 1875, p. 10. 

 Semnopithecus (Trachypithecus) pileatus Reichenb.. \''ollstand. 



Xaturg. AfFen, 1862, p. 92. not figured. 



BONNETED LANGUR. 



Type locality. Malay Peninsula? Type not in Calcutta Museum. 



