TRIASSIC STEGOCEPHALIANS. 



365 



either. The postfrontal is more than twice as long as broad. 

 The jugal forms the lower margin of the orbit, but much the 

 larger part of the bone is situated behind the orbit. The supra- 

 squamosal is only about half the size of the squamosal. 



The occiput slopes away from the postparietals as in Brachyops, 

 but being much better preserved we can make out something of 

 the structure in Bothriceps. The postparietal is well developed, 

 and has a considerable part on the occipital aspect which articu- 

 lates with the exoccipital. The babular is smaller than the 



Text-fii'-ure 2. 



Skull of JSothrieeps australis, about f nat. size. 

 For lettering see text-fig. 1. 



postparietal, and if only the upper surface were seen might be 

 regarded as forming a small posterior horn, but the exoccipitals 

 extend much behind it, and inferiorly and internally it articu- 

 lates with what is probably the paroccipital. 



The parasphenoid is large and there are no teeth on it. 



Brachyops^ Bothricejjs, and Batrachosuchus are allied genera 

 forming a very distinct family which may be called the 



•26* 



