SING-SING WATERBUCK 



'83 



Skull of Male Sing-sing Waterbuck, from a Semliki. 



SING-SING WATEEBUCK (Cobus defassa). 



Gurumes of the Gallas. Tambiir of the Dinkas. 



Distinguished from the common waterbuck (C, ellipsiprymnus] by 



the presence of a large white patch on the lower part of the buttocks, 



instead of a white elliptical ring extending higher up. Four more or 



less distinct local races of this species may be recognised. First, the 



West African sing-sing (C. defassa unctuosus\ of Senegal and Gambia, 



characterised by its rufous colour and the small amount of white in 



the region of the eye. Second, Crawshay's sing - sing (C. defassa 



