156 
C. Height about 28 inches. Basal length of skull about 8 inches. 
a. Horns strongly hooked at the tips . . . . . 72. C.redunca. 
b. Horns not hooked terminally. —_ 
a’. S. Africa. 2 2 6°55 SG eC eoonernees ie 
BB. Africa... 5 5 We ee 2 CNR q 
