PON GO lg9 



the animal only from Von Wurmb's description, never having seen 

 it himself, in his own diagnosis sadly confuses two or more genera of 

 the Primates together, and among other things says that his Pongo 

 wurmbi has "Bakentaschen und Gesatrschwielen." Now no Anthro- 

 poid has cheek pouches, and only Hylobates has very small hind 

 callosities, but the expansion of the skin on the throat may have been 

 mistaken for a pouch, otherwise Baboons and Apes have been mixed 

 together. As, however, there seems to be no doubt that P. zvurmbi 

 was an Ourang, the name to be applied to the Borneo species would 

 be that bestowed by Tiedemann, if it should hereafter prove not to be 

 the same species as the Sumatran Ourang, whose name would then 

 be abelii. 



Simla satyrus Linn., 1766, cannot be employed, because the name 

 was given by him to a species of Chimpanzee, in the 10th edition of his 

 Systema Naturje, 1758, p. 25. 



LITERATURE OF THE SPECIES. 



Bomean Ourang. 



1763. Hoppius, in Amccnitates Acadcmiccc. 



Pongo pygm^us first described as Simla pygmccus. 



1766. Linnceus, Systema Naturce. 



Pongo pygm.eus renamed Simia satyrus. 



1808. F. Tiedemann, Zoologie. 



In this work an Ourang from Borneo was named Pongo 

 zvurmbi = P. pygm^us Hoppius. 



1812. E. Geoffroy St. Hilaire, in Annates du Museum d'Histoire 

 Naturelle, Paris. 



In his Tableau des Quadrumanes this Author places the Ourang 

 in two different genera, each genus having one species of this 

 great Ape. Pithecus, "tete ronde, bras longs," with P. satyrus 

 = Pongo pygm^us, and also including in the same genus three 

 forms of Hylobates. The second genus is Pongo, "tete 

 pyramidale, longs bras" ; with one species P. wurmbi = P. 

 PYGM^us. The characters of the genera 'tete rond' and 'tete 

 pyramidale' are of no distinctive value, representing as they do 

 merely differences of age, or possibly sex. 



1826. Clark, in Asiatic Researches, Calcutta. 



The Sumatran Ourang is here called Simla abelii. 



1836. R. Owen, in Proceedings of the Zoological Society of London. 

 A female Pongo pygm^eus described as Pithecus morio. 



