the SkitU of Diademodon. 



299 



The outer end of the process is expanded and strongly 

 united with the squamosal by a wide (flat?) face; on the 

 b.iek of the skull it is also touehed by a deseendin<^ plate 

 from the parietal, which passes down on the inner side of the 

 s(iu;imosal behind and outside the small post-temporal fossa 

 (tig. 4). 



Fisr. 7. 



Fiff. X 



Fisr. •3. — Diadetiiolon hruwni, R. 3587. X 1. From below. References 

 as in fijjs. 1 and 2, with, in addition : f-Jng., foramen jug-ala»^ 

 Piir.oc, paroccipital process; Fed., palatine; Qu., quadrate; ^., 

 vomer. 



Fig-. 7. — Diademodon browni, R. 3o87. X 1. Right quadrate from in 

 front. 



The supra-occipital is not separated from the exoccipitals, 

 but no doubt forms the upper border of the foramen magnum. 

 Articulating with its upper edge by a jagged suture is the 

 interparietal ; this, so far as it can be seen, is a thin 

 squamous bone bent along its mid-ventral line and lying 

 wedged in between the posterior flanges of the parietals ; it 

 forms a large area of the median division of the back of the 



