On Two New Species of Dicynodon. 39 



proportion of the upper and inner portion is covered by the post- 

 orbital. The zygomatic portion passes forward to a point below the 

 orbit, where it comes to an end between the maxilla and the jugal. 

 The downward portion is attached at its lower end to the quadrate, 

 and also supports the large quadrato- jugal plate. 



The palate, although not fully developed, appears to be of the 

 normal type. 



The following are some of the chief measurements : 



Greatest length 242 mm. 



Greatest breadth probably 170 ,, 



Snout to front of orbit 67 ,, 



Length of orbit 48 ,, 



Minimum width between orbits 42 ,, 



Minimum width of temporal roof 18 , , 



Front of postorbital arch to back of squamosal... 127 ,, 



Maximum height of skull 115 ,, 



Maximum width of lateral plate of squamosal 



probably 35 ,, 



The chief features, therefore, lie in the height of the skull, in the 

 rather large size of the orbit, the extended postorbital, and the large 

 ratio (7 : 3) between the frontal and temporal widths. 



