— 2/6 — 



The type spécimen has rudiments of claws on the second, third 

 and fourth toes. On this spécimen the fifth toe as well is provided 

 Avith such one, and even on the first a tiny rudiment may be 

 traced. In this respect A. c. congica appears to be less specialised 

 than other races of African Clawless Otters. As the stronglv 

 enlarged molars, resp. last upper praemolar, of thèse animais must 

 be regarded as specialised characteristics, but the Congo race has 

 smaller molars than the others, the Congo animal appears to be the 

 comparatively most primitive of the African Clawless Otters as' 

 well with regard to the dentition as to the feet. This interestine 

 fact stands probably in connection with its biology and diet about 

 which, however, nothing appears to be known as yet. 



/Ëpyceros melampus katangae n. subsp. 



In the Congo Muséum at Tervueren are kept several spécimens 

 of Impala antelopes from Katanga which are perfectly similar inter 

 se but at the same time dififer as well from the typical South African 

 as from the northern races found in German and BritishEastAfrica. 

 Thèse Katanga spécimens distinguish themselves very readilyfrom 

 the other races mentioned above by their small size, slender head, 

 short, and comparatively little curved horns. 



In the vear 1892 Thomas described (Proc. Zool. Soc, London, 

 P- 553) ^"^ Impala from Zomba, Nyassaland, which he named 

 y^pyceros melampus johnstoni. This race is said to distinguish itself 

 « by its slenderer skull and much shorter horns ». Thèse characte- 

 ristics are thus the same by which the Impala difFers from the typi- 

 cal, and the northeastern races. The Katanga race is, however, 

 considerably smaller even than the Nyassa race. The following 

 table of measurements gives the dimensions of the skulls of two 

 fully adult bucks from Katanga. 



mm. mm. 



Condjdobasal leugth 



Basai length 



Greatest breadth (at back of orbits) .... 



Interorbital breadth 



Least breadth just in front of orbits . . . . 

 Breadth of sknll above juuctioii of ;«' and »î° . 



257 



257 



242 



240 



106 



109 



69 



72 



66 



68 



n 



1^ 



