362 Annah of tlic South African Mtiscnm. 



height, and its greatest length is 13 mm. There are no serrations 

 on the edges visible, but the edges are not very satisfactorily dis- 

 played. The tooth has a very long root, almost equal in length to 

 the exposed portion. At its end there is a large open pulp cavity 

 showing. In front of the large canine is a small tooth which I 

 believe to be the 1st canine, as in Scylacosarsus. It is situated 

 3 mm. from the large canine, and it is about 2 mm. in length, and 

 7 mm. in height. The posterior maxillary teeth are very badly 

 weathered. A considerable portion of 3 and the root of a 4th 

 remain on the one side and portions of 5 on the other. Unlike 

 the molars of the Therocephalians generally, the teeth are much 

 flattened and have minute serrations at least on the posterior 

 edge. From the length of the maxillary and the size of the teeth, I 

 think it probable that the full number of molars has been 8. 



The premaxillaiies are not well preserved, but most of the 

 incisors are satisfactorily displayed. The 1st incisor is a rounded 

 tooth, but the others are somewhat flattened. It is probable that 

 there are serrations on both the anterior and posterior edges of all 

 the teeth, but in only a few are the serrations visible. From the 1st 

 to the 4th the teeth increase in size, while from the 5th to the 8th 

 they steadily decrease. It is difficult to be quite sure of the margin 

 of the bone, but the following measurements are at least approxi- 

 mately correct : — 



The nasals are broad in front and narrow behind. The nostrils 

 are supported inferiorly by the premaxillary processes which pass 

 between the maxillae and the nasals. The nares are large, and a 

 distinct septo-maxillary can be seen as in most Therocephalians. 



The frontals are large and fairly flat. The interorbital measure- 

 ment is about 40 mm. The diameter of the orbit is 37 mm. There 

 is a large parietal foramen. A distinct post-frontal bone cannot be 

 made out, but the specimen is not in a satisfactory condition for 

 seeing sutures. The post-orbital passes on to the parietal in the 



