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(9). On a Large Extinct Species of Bubal-is. By E. BROOM, D.Sc. 



The specimen consists of the postorbital portion of the skull with 

 the proximal part of the left horn core. The right side of the most 

 of the upper surface is missing, but the occiput is nearly complete 

 and much of the base of the cranium is preserved. 



The large bony elevation from which the horns spring rises to a 

 height of 75 mm. above the roof of the brain case, and contains two 



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BDBALIS PBISCUS. X . 



enormous air sinuses. Taking direction from the basi-cranial axis, 

 the horn core passes backwards and outwards, so that when the 

 skull is viewed from behind the proximal portions of the horns lie 

 in a horizontal line. There is some little evidence that more distally 

 the horn curves slightly upwards. The greatest width of the horn 

 core at its base is 110 mm., and the greatest thickness 63 mm. The 

 frontal region immediately in front of the base of the horn core 



