THE RHODESIAN BABOON 173 



aud long muzzle i)iecUide any possibility of its being 

 confounded with the Yellow Baboon (Fapio cynocepha- 

 Ins) ; and its distinctive coloration, long mantle of hair 

 on the dorsal region, hands and feet if anything paler 

 than the arms and legs, serve to diflerentiate it from the 

 Common Chacma of South Africa — apart from the dif- 

 ferences in the skull noted below. Sclater, in his " Mam- 

 mals, Fauna of South Africa,'' states that the Yellow 

 Baboon inhabits Khodesia ( Mash on aland ), ^ut I think 

 That must be an error, as this animal is found along the 

 coastal tracts from Delagoa Bay northwards, being re- 

 placed in Central Rhodesia by the Rhodesian Baboon, 

 and much further AVest again (Bulawayo to Livingstone), 

 as far as I can make out, by the S.A. Chacma. Cer- 

 tainly we have had ordinary Chacmas from the Bechu- 

 ana-Rhodesian border, and one from Gwaai, but Avhether 

 the authenticity of the latter locality can be trusted, re- 

 mains to be seen. 



Description of j>>]cnU of Rhodesian Baboon: — Pari- 

 etals not so rounded or high as in porcarius, more 

 like those of cynocephalus; sagittal crest more developed, 

 although in very old Chacmas this is more advanced than 

 that of the example on the accompanying plates ; f rontals 

 wider; supra-orbital ridge well developed; squamosal not 

 so deeply dented as that of the Chacma. Nasals long, 

 and broader than those of the Chacma, the nasal opening 

 or orifice being much wider and more open than that of 

 the Chacma, resembling in this direction • miore the skull 

 of the Yellow Baboon; maxilhe higher, with the ridges 

 more pronounced than those of the Chacma Baboon. 



Measurements (in millimetres). — Total length of skull, 

 217; zygomatic width, 120; occipito-nasal length, 171; 

 intertemporal width, f»l; median length of nasals, 77; 

 length of upper canine 40 (tips badly worn) ; length of 

 upper molar series, 61; lower molar series, 82; length of 

 mandible, 162. 



As will be seen from the above, the skull — like the rest 

 of the animal — partakes of the characters of both the 

 Chacma and Yellow Baboons. 



