212 ANTHROPOID APES. 



black on the limbs, with red patches on the head, 

 and reddish in the pubic region, does not essen- 

 tially differ from tliat which has been described 

 by different authors in the case of other skins which 

 have indeed been artificially restored. But the 

 hide essentially differs from that of other specimens 

 in the sharp division of the brown colouring of the 

 belly from the grey of the back, by the reddish tint 

 of the hair which clothes the pubic region, and also 

 in the abundant growth of hair which so closely en- 

 circles the cheeks and chin. But, according to our 

 authorities, the most remarkable difference consists 

 in the fact that the whole of the back is covered 

 with long, thick hair, while in Gorilla Gina this 

 part is either bare or only covered with short hair, 

 |)artly w^orn away. Hence these authors conclude 

 that this species, which they assert to be new, and 

 have named Gorilla Mayema, from the negro chief of 

 that name, does not rest its back against a tree so 

 often as the Gorilla Gina, but leads a more arboreal 

 life, climbing from tree to tree.* 



I admit that if I were to take into account all 

 the individual differences of the gorilla skulls and 

 skeletons of the same sex and of about the same 

 age, I should be able to produce a half-dozen or 

 more species of gorillas. I have observed such 

 differences in the case both of male and female 

 individuals of about the same age, and have given 

 an exact description of them in my osteological 

 work on the gorilla to which I have so often referred. 

 I cannot, however, refrain from regarding these 



* Bulletin de la Societd Zoologique de France, p. 1 : 1877. 



