214 ANTHROPOID APES. 



Man himself will sometimes adopt such an attitude. 

 Without more convincing proofs that Gorilla Mayema 

 Alix et Bouvier constitutes a distinct species, I should 

 prefer to leave the matter in suspense. 



I frankly admit that I am more doubtful how to 

 decide the question whether we can at present 

 assume that there are several or only one species of 

 chimpanzees. Troglodytes niger has always been 

 regarded by me as to a certain extent a typical form 

 of this animal, and in the second chapter of this 

 work I selected it as the subject for my general 

 description. It is this type of chimpanzee which 

 has usually reached Europe from the West Coast 

 of Africa. The face of this animal is moderately 

 prognathous ; the head, even in aged males, is round, 

 the ears are large and of somewhat the form pre- 

 sented in Fig. 6, the skin is of a dirty flesh-colour, 

 and the hair is black. Keichenbach's Pseudan- 

 thropos {Troglodytes)leucoprymnus* is only so specified 

 on account of the whitish hair which clothes its 

 posterior — a character observed in all true chim- 

 panzees, and therefore without specific value. 

 Lainier, the keeper of the Museum at Havre, has 

 had an illustration made from a damaged skin of a 

 large (probably male) chimpanzee ; but we can only 

 form an imperfect opinion of its general external 

 appearance from this figure.f There is as little 

 certainty about Gray's Troglodytes vellerosus from 



• Die YoUstamcUgste Naturgeschichte der Affen, p. 191 : Leipzig 

 and Dresden. 



t See Ohenn, Encyclopidie d'Historie Naturelle, QiMdrwmanes, 

 p. 34. 



