of Assam Mammalia and Birds. | 367 
the discoveries he has made, and to bring before the public a faith- 
ful statement of his zoological observations in Assam, and of the zeal 
and ability with which he has executed the charge confided to him.” 
MAMMALIA. 
Order I. QUADRUMANA. 
Genus HyLosBaTEs, Illig. 
1. Hylobates Hoolook, Harlan, Trans. Amer. Philos. Soc. 
The first authentic account of this animal is contained in the 
fourth volume of the Transactions of the American Philosophical 
Society. Dr. Harlan here describes and figures, from a prepared 
specimen, an adult male, which was brought to Philadelphia in 1832 
by Dr. M. Burrough, together with a large collection of rare and 
valuable skins of quadrupeds and birds, obtained on the plains of 
the Burhampooter river, near Assam. The specimen described, 
with another adult and a young subject, was presented to Dr. B. by 
Capt. Alex. Davidson, of the Hon. East India Company’s station at 
Goalpura, in the latitude of 26° north on the Burhampooter. They 
were taken on the Garrow Hills, in the vicinity of that station ; they 
soon became tamed, especially the young one; they were docile and 
affectionate, and rather inclined to melancholy. They lived some 
time in the possession of Dr. B., but died on his voyage down the 
river to Rangoon. ! 
A specimen of this species was brought from India by General 
Hardwicke, and presented to the museum of the Zoological Society, 
where it is exhibited. Living individuals are af present in the So- 
ciety’s Gardens in the Regent’s Park. 
“The colour of the Assam animal is uniformly black, except the 
eye-brows, which are white. Some individuals are grayish-yellow. 
Its length is not much above two feet. It is possessed of the most 
wonderful activity, making use of its arms in swinging from tree to 
tree: nor is the female in any way restrained in her movements by 
the young, which she carries suspended to her body. 
“ Inhabits the Cossiah Mountains and valley of Assam.” — Mc Clel- 
land's MS. 
Genus Macacus, La Cép. 
2. Macacus AssAmEnsis*. Fulvo-cinereus, supra saturatior, 
gastreo artuumque latere interiore canis ; capillitio pilis paucis 
nigris sparso; facie natibusque carneis ; caudd partem tertiam 
longitudinis totius superante omnino pilis tectd. 
“ Bluish-gray, with dark brownish on the shoulders ; beneath light 
gray: face flesh-coloured, but interspersed with a few black hairs: 
length 23 feet: proportions strong: canine teeth long, and deeply 
grooved in front ; the last of the cheek-teeth in the upper jaw blunt.” 
—MeClelland’s MS. 
* The names used in this paper, where no authority is given, are those 
of Mr. McClelland’s MS. 
