. 10 
ga. Supraglenoid large. 
Giraffa. 
XIX. Supraglenoid, postglenoid, postparietal and postsquamosal. 
g. Supraglenoid small; mastoid not grooved. 
Anchitherium. 
3. Supraglenoid large, mastoid grooved. 
Mippotherium, Protohippus, Hquus. 
XX. Supraglenoid, postglenoid, postparietal, postsquamosal and mastoid. 
Cervus, Oreas, Ovis. 
PusiisHeD Marca 6, 1880. 
