— lôy — 



phically more distant, tvpical nigrifrons, but also distinct from 

 the same by larger size, paler under surface, by tiie dark colour 

 extending higher up on the legs etc. 



Cephalophus nigrifrons Claudi Thomas and Wroughton. 



Among the spécimens of this kind of Duiker a considérable 

 variation is apparent. This may to some degree be regarded as 

 local, but mostlv as individual. Among the local variations may 

 be noted that spécimens from Punga are a little darker with larger 

 dark patches on the heel and with a dark band or patch on the 

 chest, whereas spécimens signed « province orientale » (coUected 

 by Weyns) and Banalia (coUected by Nahan) hâve very little 

 dark on the heels and not at ail on the lower side of the bodv. 

 The latter hâve also the dark blaze mixed with rufous. A spécimen 

 from Ponthierville (Pilette) has again dark markings as those 

 from Punga. As ail thèse places lie Fithiiîi practically the same 

 région with regard to natural conditions I do hot think they are of 

 racial value. Purely individual are evidently some cranial varia- 

 tions. Only fully adult spécimens are considered lox this compari- 

 son. Two skulls from Punga hâve a total lengtftvoï resp. 169 and 

 177 mm., the larger being a female and the smaller a maie, and 

 their preorbital length is resp. 92 and 103 mm. In a similar wav 

 the skulls of three more light coloured spécimens viz. two maies 

 (smaller from « province orientale » and a female (largest) from 

 Banalia hâve a total length varying between 165 and 177 mm., 

 and a preorbital length varying in a corresponding manner between 

 91 and 102.5 lîim. The length of the nasals mesially varies in the 

 former case (Punga spécimens) between 63 and 75.5 mm., and in 

 the latter ^« prov. or. » and Banalia) between 69.4 and 81.4 mm. 



As the smaller group of thèse measurements fall within the 

 Jimits of variation for the typical Cephalophus nigrifrons ^ I cannot 

 regard the Claudi form in Belgian Congo to be but a subspecies 

 of the former. 



A spécimen from Moera differs markedly from those mentioned 

 above in having the frontal blaze shining black(not blackishbrown). 



