LÖNNBERG, MAMMALS FROM BRIT. E. AFRICA. 3 



from Kilimanjaro is referred. Such a statement as this is, 

 I regret to say, very misleading. Anyone who like myself 

 collects Tumbilis in the neighbourhood of Fort Hall and finds 

 Guenons with the lower side white or whitish, cannot be- 

 lieve to have found Elliot's ruhellus (first described 1909), 

 but a very different animal. In such a way I was led to 

 believe that the Guenons which I collected 1911 at the na- 

 tive village Kanyakeni not very far from Fort Hall, and 

 other places in this district, belonged to quite another spe- 

 cies, and I identified^ them, although with some hesitation, 

 with the race »centralis lutea» described by the same author 

 from a locality not very distant. Låter on I have, however, 

 been informed that the ventral surface of the type of Elliot's 

 »rubellus» (kept in Brit. Mus. Nat. Hist.) is not at all buff, 

 but »white or dirty white — caused by dirt on the hair». 

 It could thus properly have been described as »whitish». 

 Since this information has been obtained the whole thing 

 is quite clear, the type of ruhellus has had the white hair 

 of its ventral surface stained with the red laterite soil of its na- 

 tiv^e country (like a genuine Kikuyu animal). On this the 

 author has based his description of the colour of the animal 



»no white on under parts — throat, inner side of arms 



and legs pinkish buff; abdomen and anal region cream buff»! 

 Sinoe, however, these matters have been set aright it is evi- 

 dent that the specimens from Kanyakeni etc. which I (1. c.) 

 referred to Cercopiihecus vygeryihrus luteus really must bear 

 the older name ruhellus. But when the buff colour of the 

 under parts of the ruhellus has been taken away, it appears 

 rather possible that the same of luteus ought to be reduced 

 for similar reasons. It must also be remembered that the 

 last mentioned name was based on two immature females. 

 Such young animals always have a duller (less »reddish») co- 

 louration than the fully adult ones, especially the males. A 

 characteristic on which Elliot also appears to have put 

 some value is that luteus shall have »feet iron grey», This 

 is, however, as I have pointed out before, probably a juve- 

 nile, or feminine characteristic,* and then the difference be- 



^ K. Sv. Vet. Akad. Handl. Bd. 48, N:o 5, p. 37. 



' F. i. young C. p. johnatoni have more or less grey feet, while those 

 of the adult are black. 



