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 Hylobates, Ulig. 

 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 at 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." — McClel- 

 land s MS. 



Genus Macacus, La Cep. 



2. Macacus Assamensis*. Fulvo-cinereus, supra, saturatior, 



gastrceo artuumque latere interior e canis ; capillitio pilis paucis 



nigris sparso ; facie natibusque camels ; 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 c l\ feet : proportions strong : canine teeth long, and deeply 



grooved in front ; the last of the cheek-teeth in the upper jaw blunt." 



—.McClelland' s MS. 



* The names used in this paper, where no authority is- given, are those 

 of Mr. McClelland's MS. 



