428 THE HON. WALTER ROTHSCHILD ON [DeC. 13, 



of face. Chin sparsely clothed with brown hairs. Beard short 

 and thick and surrounding chin. 



Cranial characters : brain-case fiat ; occipital region flat and 

 much lengthened ; facial poi^ion of skull slender, not expanded 

 at the molars. 



7. SiMiA CHiMPANSE (Mayer) Arch. ISTatura:. xxii. (i.) p. 282 

 (1856). ^ - ^ ' ^ 



Distribution. Gambia and Senegambia. 



Distinctive characters. External : hair of head parted in centre ; 

 ears large ; beard laterally long, standing out from the face ; chin 

 free aiad clothed with white hairs. 



To these forms I must add the following : — 



SiMiA RARIPILOSUS Eothsch. antca, p. 422. (Text-fig, 111.) 



Distribution. Probably some part of the interior of French 

 Congo. 



Text-fig. 111. 



Head of Simia 'pygma'ns rarijyilosus Eothsch. (From life.) 



Distinctive characters. External : hair of head not or partly 



