1853.] Remarks on the different species of Or ang-iitan. 371 



without described exception.* It would appear that neither sex has 

 the cheek callosities at any age ; and the colour of the hair is said 

 to be darker than in the others. This description corresponds with 

 the appearance of an enormous female Orang-utan that was exhi- 

 bited some years ago in Calcutta (vide J. A. S. XVI, note to p. 

 729) ; and the animal is the Mias Rarnbi of Sir J. Brooke. 



The same observer continues — " The second variety [of skull] is 

 the Simia morio, and nothing need be added to Mr. Owen's account, 

 save that it presents no ridge whatever beyond the frontal part of 

 the head. No. 9 in the collection is that of an adult male. # * # 

 There are many other skulls of the Simia moeio which nearly coin- 

 cide with this suite, and this suite so entirely coincides through the 

 different stages of age, one with another, that no doubt can exist of 

 the Simia morio being a distinct species. The different character 

 of the skull, its small size and small teeth, put the matter beyond 

 doubt, and completely establish Mr. Owen's acute and triumphant 

 argument, drawn from a single specimen." — Of Pithecus morio, our 

 museum contains a skeleton (minus most of the bones of the hands 

 and feet) of an aged female, presented by R. W". GL Frith, Esq., in 

 1836. f It had died in Calcutta, and the skin containing the bones of 

 the hands and feet had been unfortunately thrown away when Mr. 

 Erith secured the body for the Society's Museum. A few of the 

 digital bones, however, were recovered. Comparing the skull of this 

 specimen with that figured by Prof. Owen (Trans. Zool. Soc. II, pi. 

 33 and 34), I incline to infer that Mr. Owen's specimen is the skull 

 of a male animal, chiefly from the greater depth of the alveoli : the 

 longitudinal extent of grinding surface of the series of upper molars 

 (bicuspids included) is exactly 2 in., as also in another skull of an 

 adult female to be presently noticed, and 2 in. 2 1. in that figured by 

 Prof. Owen : lastly, the zygomatic arch of our aged female skull is 

 much more slender than that of either of the others. 



* Unless, perhaps, that of an adolescent female in the museum of the Royal 

 College of Surgeons, London. 



f Vide «/. A. S. V, 833, where mentioned as " the Sumatran Orang-utan." She 

 was one, however, of a pair purchased by our joint-Secretary Mr. Grote, at Singa- 

 pore ; and this gentleman informs me — " They were not from Sumatra, but from 

 Borneo. At least I am pretty sure that my memory does not deceive me on this 

 point." 



