32 EINAR LONNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



material, has caused the confusion, which now, as it may be hoped, is removed. On 

 the other hand, however, this great variation is of deep interest, and it ought to be 

 considered in connection with several other striking proofs of variation which are eluci- 

 dated in this paper. 



Cercopithecus schmidti enkamer Matschie. 



1 cj', 2 ¥? from Rutshuru, ^Vs 1913; 2 J'c?, 2 ?? ibid., ^V^ 1913; 2 ^^ ibid., "A 1914; 

 J" ? from the forest at Masisi in the Kivu district, Pebr. 1914; 1 ? from Beni, Aug. 

 Sept., 1914. 



All these specimens show the characteristics by which according to Matschie the 



subspecies enkamer differs from the typical schmidti, viz. »die Aussenseite der Unter- 



schenkel hell bestaubt, der Schwanz auch dicht iiber dem Anus tief grau » . Only 



one of the specimens from Rutshuru has the basal under parts of the tail light grey as 

 shall be the case in C. schmidti sassce Matschie (viz, ? n:o 22). As this specimen has 

 been shot the same day as other specimens with normal colour at the root of the tail this 

 may be only an individual aberration. The colour of the specimens of this collection 

 is on the whole essentially alike, although presenting variation. The male (but not the 

 female) from Masisi has very long black tips of the hairs of the upper parts of the head, 

 so that the crown looks almost black when the hairs are laid down. It is uncertain, how- 

 ever, if this is more than an individual variation. The same is probably also the best 

 interpretation of the fact that this specimen has a brighter shade of yellow in the rings 

 on the hairs of the crown than the other ones, even than the female from the same place. 

 These rings are somewhat different in shade in the different specimens perhaps palest 

 in the female from Beni. 



There are still some other differences in shades of colour, but they appear to be 

 individual as well. The light sprinkling on the arms is somewhat more or less pronounced 

 in different specimens from the same locality and of the same sex. The darkest hind legs 

 with least sprinkling are found in the male from Masisi and the female from Beni, thus in 

 those from the most distant localities, but some of the other specimens are almost as dark. 



The colour of the tail is rather variable; in some instances it may perhaps have 

 faded. Often the tail of the females as well as also the same of several males is »f awn » 

 (Dauthenay: Rep. de Coul. 308) with a lighter shade of this colour below and on the 

 sides darker above. Some males have the tail bright rust-red (Rep. 318, 1 & 2). The 

 female from Beni has the darkest red tail resembling a light shade of »mahogany» (335) 

 on the sides and almost »madder brown » (334) above. In some of the females from Rut- 

 shuru the tail is more dusky above than in other specimens, but I am inclined to regard 

 all these variations in colour as wholly individual. 



In the year 1914 Lorenz von Liburnau named some Guenons from oWabembe 

 im Nordwesten des Tanganyikasees » »Lasyopyga schmidti montana ».^ The distinguishing 

 characteristics of this supposed new race should consist in the following: »Behaarung 



1 Anz. d. K. Akad. d. Wiss. Wien 1914 Jahrg. LI, p. 357. [ ^ i , 



