IN THE CARNIVOROUS DINOCEPIIALIAN REPTILES. 



671 



the advi-sability of dividing tlie Dinoceplialia into two sub- 

 orders — the Tapinocephah'n, and tlie Titanosuchia. The latter 

 suborder would have in it two known families — the Titano- 

 suchidje and tl»e Dinartamida?. 



BuRNETiA MiRAiiiLis, gen. et sp. nov. 



Tlie specimen on which this new genus and species are founded 

 is a nearly perfect skull, without the lower jaw, found by me 

 at Water Krantz, in the extreme north-west of the GraafF Reinet 

 division where it adjoins the Richmond division. At the point 

 where the specimen was found, fossils are very ra.re, and this 

 specimen was the only one discovered in a couple of hours' hunting 

 on good exposures. The horizon is most pi-obably the lower 

 beds of the Lyslrosaurns zone. 



The skull is quite nnlike any other that has ever been found 

 in South Africa or elsewhere ; and only now, five yeai's after its 



Text-fiome 9. 



Side view of skull of Burnetia mirahilis, gen. et sp. nov. 

 A little less than 4 n.it. size. 



discovery, do I venture to describe it. There seemed a possi- 

 bility that it might be a late degenerate Titanosuchid, more 

 especially as it has large bony bosses o\er the orbits somewhat 

 like those seen in the British Museum specimen which Watson 

 has called Anteoscmrus magnificus. After patiently waiting all 

 these years, I find it convenient to describe it in this paper, 

 which includes an account of all the important details of Titano- 

 suchid structure, because it has some superficial resemblances to 

 Dinocephalians, although not at all a member of that group. 



The skull as preserved is 177 mm. long, and was probably, 

 when perfect, about 190, and is 170 mm. wide. Unfortunately, 

 practically all tlio outer bones of the skull are composed of a veiy 

 line-grained, spongy bone, from which it is quite impossible to 

 remove the covering matrix except by grinding, and all trace of 

 sutures seems to be obliterated. As preserved, all the surface 



