502 



Annals of the South African Museum. 



parietal region; but there can. I think, be no doubt that it is 

 specifically identical. 



The fora men magnum is small, and placed about onethird of the 

 height of the skull above the base as seen in occipital view. 



The basioccipital condyle is fairly large and rounded, although it 

 is smaller than that figured by Watson in Scymnognathus tvhaitsi. 

 The basiorripital is fairly thin posteriorly, but it swells out laterally 

 in front to form part of the wall of the fenestra ovalis. Medially 

 on the lower surface it is deeply and narrowly grooved - - the groove 

 being a continuation of that in the basisphenoid. The bone supports 

 the exoccipitals above and the paroccipitals laterally . The exocci- 

 pitals are small, forming the lateral margins of the foramen magnum. 



CL. 



Fig. 2. Scylacops capcnsis, Br. 

 a. Occiput of type skull, 

 h. Left side of snout of type skull. 



The occipital plate is very concave, so that the outer ends of the 

 stout paroccipitals lie some distance behind the foramen magnum. 

 The inner anterior end of the bone lies below the level of the basi- 

 occipital condyle, and forms part of the border of the fenestra ovalis. 

 The type skull shows the presence of large tabular bones on the 

 occipital plate. 



The foramen jugulare has its lower end slightly below the top of 

 the basioccipital condyle. and looks partly backwards and partly 

 downwards. 



The basisphenoidal tubera form the anterior border of the fenestra 

 ovales and are placed well forward, iietween them the basisphenoid 

 is deeply hollowed; the ridges from them rapidly converge and 

 combine to form the median basisphenoid keel which passes forward 

 to meet the pterygoid. 



In the type skull the septornaxilla rests on the premaxilla but has 

 a short articulation with the maxilla posterior to the septomaxillary 



