168 



MR. R. LYDEKKER ON A 



[June 7, 



broad in the Ichang skull. Very noticeable is the difference in 

 the form of the preorbital fossa, which is rounder, deeper, and less 

 oblique in the Ichang skull. More striking still is the difference 

 in the canines of the two forms, that of the Ichang skull being 

 nearly twice the length of that of the older ISTingpo s]3ecimen, 

 as well as differing somewhat in shape. Such differences cannot 

 possibly, I think, be accounted for by wear, as I cannot conceive 



Text-fi^. 33. 



— TVCO 



Front view of adult male skulls of JSlaplwdus micManus (A) 

 and JS. ichangensis (B). 

 fr., frontal ; na., nasal. 



how such tusks could become worn, while those of the Ningpo 

 skull show no signs of wear. I may add that the figured skulls 

 differ in the form and relations of the premaxillse, but I find this 

 to be a very variable feature. 



Compared with a female skull of the typical Tibetan E. cepha- 

 lophus in the British Museum (No. 92.7.13.1), which is the only 

 specimen of the latter species available, the adult Ichang skull 



