24 MAMMALIA. 



4. Simla abelii. 



Ourangoutang of Sumatra, Clarke Abel, As. Resch., vol. xt, 1825, 



p. 489, pis. 1 to 3, and IV & V. 

 Simla abelii, Fischer, Syn. Mamra., 1829, p. 10. 

 Pithecus satyrus, Evans, Journ. As. Soc. Bengal, vol. vii, 1838, 



p. QQ9,partim. 

 Simla gigantioa, Pearson, Journ. As. Soc. Bengal, vol. x, 1841, 



p. 660. 

 Pithecus bicolor. Is. Geoff. Atti della terza riun. d. Scienz. Hal., 



1841 ; ibid.. Arch, dv, Mus., t. ii, 1841, p. 526. 



Sumatran Orang-outang. 



Hah. Sumatra. 



4a. The lower jaw, No. 3B o£ Blyth's Catalog^ue, of the 

 large individual first described by Dr. Clarke Abel in the 

 Asiatic Researches, Vol. XV, 1825. This jaw was figured in 

 the same work. Plates IV and V, and again figured, half 

 natural size, in the Journ. As. Soc. Bengal, Vol. VI, Plate 

 XVIII. Described by Mr. Blyth, op. cit., Vol. XXII, 1853, 

 p. 374. Thia specimen is very much smaller than the jaw of 

 the next skull. The former measures only 6"'55 in the ex- 

 treme length of the jaw, whereas the latter is no less than 7"'60. 

 The condyle of Dr. Clarke Abel's specimen is only 3'''50 

 above the inferior line of the horizontal ramus, whereas in the 

 next individual the measurement is 4"*90. The coronoid pro- 

 cess of the former is only S'^SO, while in the latter it is 4''70, 

 the breadth of root of the ascending ramus in Dr. Clarke 

 Abel's animal being S'-SO to 2*-65 in next specimen. There 

 is no perceptible difference in the length of the dental line 

 of the two jaws, but this jaw is enormously larger than the 

 other. The symphysis in Dr. Clarke Abel's specimen is only 

 2"-60, and in the next skull it is as great as 3'-05. The 

 form of the jaws is much tlie same, and although the smaller 

 jaw has all its teeth, the teeth are not worn, whereas in the other 

 massive jaw the teeth are considerably worn. I am there- 

 fore disposed to attribute the difference in size solely to 

 individual peculiarities. Presented by Captain Cornfoot, 

 1822.1 



> The stuffed skin of Dr. Clarke Abel's specimen from the north coast of 

 Sumatra, presented by Captain Cornfoot, As. Researches, Vol. XV, App. 

 p. 32, 1822, and described in the Asiatic Researches for 1825, in which the 

 head, lower jaw, teeth, hand and foot are figured, was not in the Asiatic So- 

 ciety's Museum when I took charge of it for the Trustees of the Indian 

 Museum. 



Owen has stated that the Sumatran Orang has no cheek excrescences, but 



