30 EINAR LÖNNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



specimens, 11:0 241 & 242, wliich have the palest silvery grey ear tufts, and the lower 

 back smoky blackish without any additional reddish or brownish tint (neither »carob 

 brown»), nor »chocolate») might represent a separate race, and that the other ones, in which 

 the ear tufts were darker ( »smoke grey»), and in which the reddish or brownish shade 

 of the back extends to the root of the tail, another race. The two first mentioned spe- 

 cimens have also the hind legs without brown. 



The red male 11:0 203 has, of course, a different and striking appearance, b ut it 

 seems very difficult to separate it for instance from n:o 202 on account of its colour, 

 only because it is more vividly red. 



If thus n:os 241 & 242 should be separated from the rest, the question is not, how- 

 ever, solved. It remains to decide, how they are to be named. It has alredy been pointed 

 out that they resemble Matschie's melanochir with regard to the colour of the ear -tufts. 

 But Matschie stated plainly that bis melanochir is provided with »karobbenbraunem 

 Rucken», and this does not suit in this case. In a similar way the specimens of all the 

 groups into wliich Lorenz von Liburnau has divided his »variabilis» appear to have more 

 or less reddish or brownish tints 011 the lower back, and on the hind legs. If the colour 

 presented decisive characteristics, these two specimens could not be referred to »mela- 

 nochir», nor to »variabilis». 



It is, however, extremely difficult to believe that so many different species and 

 subspecies of red Colobi should live in the forest near Beni, and it appears thus most 

 probable that variabilis and melanochir, and perhaps also ellioti and multicolor are only 

 colour phases of one and the same species, or perhaps do these names apply to different 

 herds or bands of monkeys. This cannot be satisfactorily elucidated before more mate- 

 rial with more exact and more complete information concerning the animals and their 

 mode of life is obtained. Are for instance all individuals of the same sex and age in the 

 same band of these red Colobi quite alike? Are all specimens which live in the same tract 

 of the forest similar? Before these questions and some others are answered, it is difficult 

 to decide what is racial difference, or not. 



The type locality of variabilis is Moera about 20 kilometres north of Beni, as I 

 am told. 



The type specimen of ellioti was collected much further southwest, viz. »90 kilo- 

 metres west of the south end of Lake Albert Edward». 



Matschie's melanochir on the other hand is collected north of Beni, on the way 

 between that place and Irumu. 



Finally Lorenz has described a Colobus multicolor from Mawambi at Ituri about 

 140 km. northwest from Beni. This multicolor has the sacral region »dunkel schwarz- 

 braun», and the »Schenkel aussen zunächst schwarzbraun, weiter unten lehmbraun». 

 In having these parts without reddish multicolor offers some likeness with the above 

 described n:os 241 & 242, but otherwise the difference is great. C. multicolor has f. 

 i. the tail reddish brown, the ear-tufts »kastanienbraun, schwarz gerändert » etc. 



The skull of the type of C. ellioti was löst. Lorenz has not published cranial mca- 

 surcments of »C variabilis» and »multicolor». The measurements, which are recorded below, 

 of the skulls of the four adult male skulls of this collection agree 011 the whole quite weU 



