p. A dried right hand. 
Q. Extraordinary variety : described as PiTHECUS 
CURTUS, J. A, S. XXIY, 520, 525-6. Skeleton 
of adult male. Sir James Brooke (1855). 
4. S. MORIO, Owen (skull figured Trans. Zool. Soc, Vol. II, 
pi. 33, 34). Mias Kassar of the Dyaks of Borneo. 
Hab. Borneo. 
A, Skeleton of aged female : presented by R. W. 
G. Frith, Esq. (1836), vide J, A. S. XXII, 371 ; 
and skull figured p. 382, pi. 7 and 8. B. Young 
male. Presented by Babu Kajendra Mallika 
(1859). (7. Small stuffed specimen. D. Ditto of 
young female, described as P. Owenii in J. A. S. 
XXII, 372, 375, and skull figured p. 382, pi. 9 and 
10. Stuffed skin of D., perhaps of a distinct 
race. Presented by J. Apcar, Esq. (1846). 
Remark. — The crania of Orang-utans vary to an extent 
unparalleled among wild mammalia: the occurrence even of 
supernumerary molars would appear to be not unfrequent ; 
and, occasionally, in either sex, a well developed unguinal 
phalanx terminates the hallux, but does not exist in the great 
majority of individuals.* 
Sub-family HYL OB A TIN^. 
Genus Hylobates, lUiger. 
5. H. HOOLOCK (head figured badly in Martin's Nat. Hist. 
Quadr., p. 441). 
Syn. Simia hoolock, Harlan. 
S. choromandus et H. scyrites, Ogilby. 
Hoolock, or ^ White-browed Gibbon.' Uluk, 
• H. MiouTi-hlwai-gyau, Arakan (Phayre). 
Hab. Asam, Sylhet, Arakan. 
_ A. B. C. Males. D. E. F. Females. G. Infan- 
tile female. From Barrackpore menagerie, and 
presented by C. S. Bonnevie, Esq., Major Tickell, 
S. G. T. Heatly, Esq., and Babu Rajendra Mallika 
(1842-9). H. Skeletonof^, adult male. /.Ditto 
* N. B. — In an apparently mature male, now at Burdwan, which appears to be 
P. MOKio, there is no appearance of the cheek-callosities of P. satyr us. 
