Investigations in South African Fossil Eeptilia and Amphibia. 83 



The parietals are large, and wholly enclose the pineal foramen. 

 Owing to weathering of the bone surface their relations with the 

 squamosals cannot be determined. 



The interparietal forms the upper half of the occipital plate and 

 articulates below with the supraoccipital. 



The foramen magnum is large, oval in shape. Its lateral borders 

 are formed by the small exoccipitals. The basioccipital condyle 



FIG. 10. Galesuclnis gracilix. 

 Sketch of top of skull showing arrangement of bones. -,. 



is rounded. The basisphenoidal tubera are far back and considerably 

 below the level of the condyle, so that the foramen magnum appears 

 to be high up on the back of the skull. The paroccipital process 

 is deep and strong, and the post-temporal fossa is as high as the top 

 of the foramen magnum, looking wholly backwards. The foramen 

 jugulare is not seen, but it must have been high up as in Arctops. 

 The condition of the matrix renders it almost impossible to develop 



