444 QUADRUMANA. 



animal was more human in appearance than that of any other Ape (the 

 Chimpanzee, perhaps, excepted), the nose having a greater prominence 

 than that of the Orang ; the orbits, also, were more projecting, and the 

 facial angle of a higher degree. The rudiments only of callosities were 

 perceptible. The example in question was an hermaphrodite ; the species, 

 therefore, cannot be held as positively determined, until specimens more 

 regularly formed shall have been examined. This Gibbon was a native of 

 Borneo : its habits, in a state of confinement, were very gentle ; and it 

 manifested much intelligence and docility. It was fond of fruits, particu- 

 larly grapes. When standing erect, the fingers nearly touched the ground. 

 The ribs were fourteen pairs ; the cervical vertebrae, seven ; the dorsal, 

 fourteen ; the lumbar, five ; the sacral, five ; the coccygeal, five. 



GENERAL HISTORY. Miiller, in his work on the Zoology of the Indian 

 Archipelago, describes a Gibbon found in Borneo, under the name of H. 

 concolor, but which does not agree with the species thus designated by Dr. 

 Harlan. He informs us that it is called Kalawet by the Dayaks of the 

 interior and meridional parts of Borneo, and Oea-oea by the Malays. Not- 

 withstanding great differences between them, it is, he says, nearly allied 

 to H. leuciscus, the ground colour being the same in both. This varies 

 from a pale to a dark yellowish-brown colour; the chest and abdomen arc- 

 frequently of a lighter tint than the other parts, and of a brownish yellow. 

 This description applies to the individuals found on the west coast of 

 Borneo ; for those inhabiting the meridional parts of that island have the 

 hands and forepart of the body of a black brown, or sometimes of a rusty 

 black colour. Both the males and females have, on the forehead, a trans- 

 verse stripe of yellowish white ; but the woolly hair on the sides of the 

 face never becomes of this pale colour. It is impossible to say decidedly 

 to what species the Gibbon thus characterized is referable ; or whether, or 

 not, two species are indicated. Had not Miiller expressly asserted the 

 Ungka-puti, and its variety the Ungka-etam (H. agilis), to be found only 

 in Sumatra, it might be taken for that animal. In some respects it agrees 

 with the Choromandus ; but, besides having no pale superciliary stripes, 

 this latter Gibbon is from some part of continental India. The Hoo- 

 lock, which is black, with a white superciliary stripe, is from Assam. 

 Perhaps it will be best, until farther information be obtained, to give to this 

 Bornean Gibbon the provisional name of Hylobates Mulleri ; but without 

 admitting it into the list of accredited species. 



With regard to Harlan's Gibbon, nothing is known of its habits and 

 manners. Lesson, on what authority does not appear, considers the ani- 

 mal to be identical with the Ungka-etam (Hylobates Rafflesii, Geoff'.), 

 which he terms Hylobates Unko. (See Species des Mammifcrcs, p. 53, 

 1840.) 



