SEMNOPITHECUS vez PRESBYTES. 19 
side of the limbs ; while in old females this rust colour is diluted or 
little more than indicated.” 
Dr. Anderson says that a young one he had was of a mild dis- 
position, which however is not the character of the adult animal, 
which is uncertain, and the males when irritated are fierce, and 
determined in attack. No rule, however, is without its exception, for 
one adult male, possessed by Blyth, is reported as having been an 
exceeding gentle animal. 
No. 10. SEMNOPITHECUS zve/ PRESBYTES BARBEI. 
The Tipperah Langur. 
Hapitat.—Tipperah, Tenasserim. 
DESCRIPTION.—No vertical crest of hair on the head, nor is the 
occipital hair directed downwards, as in the next species. Shoulders and 
outside of arm silvered; tail slightly paler than body, “which is of a 
blackish fuliginous hue.” 
More information is required about this monkey, which was named 
by Blyth after its donor to the Asiatic Society, the Rev. J. Barbe. 
Blyth considered it as distinct from P. Phayret and P. obscurus, which 
last is from Malacca. 
Dr. Anderson noticed it in the valley of the Tapeng in the centre of 
the Kakhyen Hills, in troops of thirty to fifty, in high forest trees over- 
hanging the mountain streams, Being seldom disturbed, they permitted 
a near approach. 
No, 11. SEMNOPITHECUS ve PRESBYITES PHAYREI, 
Syi.—SEMNOPITHECUS CRISTATUS. 
The Silvery-Leaf Monkey (Blyth). 
Hapitat.—Arracan, Malayan Peninsula, Sumatra, Borneo. 
Description.—Colour dusky grey-brown above, more or less dark, 
with black hands and feet; a conspicuous crest on the vertex; under 
parts white, scarcely extending to the inside of the limbs; sides grey 
like the back ; whiskers dark, very long, concealing the ears in front; 
lips and eyelids conspicuously white, with white moustachial hairs above 
and similar hairs below. 
S1zE.—Two feet ; tail, 2 feet 6 inches. 
This monkey was named by Blyth after Captain (now Sir Arthur) 
Phayre, who first brought it to his notice; but he afterwards 
reconciled it as being synonymous with Semmnopithecus cristatus. The 
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