1853.] Remarks on the different species of Orang-utan. 375 



with the representations now given of the lower jaws of other 

 Orangs, and especially with that of the great Sumatran skull of a 

 female Mias Mambi figured by Prof. Owen in Trans. Zool. Soc. I, pi. 

 53. Its greatest antero-posterior diameter (on a plane with the 

 molars) is 2 J in. only, that of a female (?) Pappan from Borneo is 2f 

 in., of a Bornean female Mambi 2-f in., of a Snmatran male Mambi 

 2-f- in., and of Prof. Owen's Bornean male the same, and of his 

 Sumatran female 2-f- in. Yet all the teeth are somewhat larger than 

 in the Bornean female (?) Pappan, and equal those of our great Suma- 

 tran male Mambi. The hands and feet also are larger than those of 

 our female (?) Pappan from Borneo. There are no materials for ex- 

 tending the comparison : but it maybe remarked, of Dr. Clarke Abel's 

 specimen, that (as before asserted) it has distinct cheek callosities, 

 though seemingly less developed than in Dr. S. Miiller's figure. 

 The beard, however, is scarcely less grown : — but the general colour 

 of the hair is much darker, and more of a maronne-red ; inclining 

 to ferruginous upon the crown, and the beard is bright ferruginous 

 contrasting strongly with the rest.* I incline to consider it identical 

 with the Mias Pappan of Borneo, notwithstanding the comparative 

 feebleness of the ramus of the lower jaw in this particular specimen ; 

 and I suggest that the old name Pithecus sattrtjs be now restricted 

 to this species, and justly or with peculiar justice, as Sir J. Brooke 

 remarks in his letter, " from the ugly face and disgusting callosities. "f 

 The nearly perfect skeleton now presented to the Society by Mr. 

 Nicholls is that of a fully mature Bornean female (?) of the Mias 

 Pappan, in which the strongly developed lamdoidal ridges of the 

 skull do not unite upon the vertex to form a single sagittal crest, 



* This specimen is remarkable for having a well developed unguinal phalanx and 

 nail to the hallux ; a character of rare occurrence in the genus, and exhibited by 

 no other specimen in the Society's collection. 



f As the Rambi is neither Wurmb's nor Abel's animal, the names Wurmbii 

 and Abelii are unsuitable for it, and had better be disused ; while as Raja Brooke 

 was the first to discriminate it from the Pappan, I would suggest that it now bear 

 the designation of Pithecus Brookei. Should the second small Orang also prove 

 a good species, the name Owenii bestowed on it would be a fitting compliment to 

 the eminent zoologist, who has devoted so much attention to the study of the great 

 anthropoid Apes. 



3 b 2 



