1896.j _ SKULL OF ORYCTEROPUS GAUDRYI. 297 
the squamosal, which forms a prominent ridge external toit. The 
tympanic ring is nearly circular, instead of being oval with its long 
axis directed downward and forward. The postorbital processes of 
the frontals are larger, and their hinder edges are sharp and thin. 
I cannot detect any difference in the profile of the upper surface of 
the skulls of the recent and fossil forms, except such as may have 
been caused by a slight crushing of the preorbital region; and the 
difference in the size and form of the lachrymals pointed out by 
Forsyth Major cannot be taken as a character of any great im- 
portance, for the lachrymal in recent skulls varies very considerably, 
and in one specimen from Kassala it is extremely similar both in 
size and shape to the fossil. The antorbital foramen opens above 
the hinder lobe of m.', and this is also the case in the Kassala skull; 
in other specimens it is over m?. 
Skull of Orycteropus gaudryi, Forsyth Major. 
A, from above; B, from side. About two-thirds natural size. 
‘The mandible differs from that of the recent forms only in the 
