PAN 233 



P. vellerosus (Matschie), (nee Gray), is a mixture of that 

 species and P. aubryi, which is a natural sequence, for at that 

 time Herr Matschie regarded P. vellerosus and P. aubryi as 

 the same. The Author has omitted P. calvus (Du Chaillu), 

 both from his Key and Synopsis but makes it a synonym of P. 

 SATYRUS (Linn.), see p. 430. He also regards Gorilla mayema 

 Alix et Bouvier, as a large Ape of the P. vellerosus type. 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES. 



It cannot be said that, at the present time, we know the limits 

 of the range of any of the recognized species of Chimpanzee. Several 

 of them are known to inhabit the same districts of the West African 

 coasts, but exactly how they may be distributed in the localities they 

 frequent has not been ascertained. Gaboon is supposed to contain five 

 species, or species and races as different writers may regard them, and 

 Cameroon has four, with possibly three more not yet described. Of 

 these so far as known there are only two of the recognized species 

 which do not inhabit both Cameroon and Gaboon, viz. : P. satyrus not 

 found in Cameroon and P. vellerosus not met with in Gaboon, leaving 

 three found in both districts, and three as yet unrecognized specimens 

 in the Berlin Museum, restricted, as supposed, to certain districts in 

 Cameroon. If our determinations are correct, we have the singular 

 fact that nearly all the recognized forms of Chimpanzees, like the 

 Gorillas, are crowded together on a small portion of West Africa, 

 leaving us to wonder how so many distinct forms, if they are such, 

 could exist in so restricted a territory and preserve their specific 

 characters intact. 



Commencing on the West African coast at the most northern 

 point where these Apes are known to dwell, we have P. chimpanse 

 from Gambia, and P. leucoprymnus, said to have come originally 

 from Guinea, but supposed to range from Sierra Leone to Liberia, but 

 this distribution cannot be said to be satisfactorily authenticated. P. 

 Fuscus is stated to have come from the Gold Coast, but as there is no 

 specimen of this form in any collection, its habitat is at best but 

 obscure. In Cameroon is P. vellerosus not as yet found elsewhere, 

 and ranging from Cameroon into Gaboon are P. calvus, P. aubryi 

 and P. KOOLOo-KAMBA. P. satyrus is apparently restricted to Gaboon, 

 while P. FULiGiNosus ranges from Gaboon into French Congo, but its 

 limits are not known. From Basho, Dunne and Lomie, interior of 

 Cameroon, are specimens in the Berlin Museum which appear to differ 



