262 Transactions of the South African Philosophical Society. 



large parietal crest. Though the skull is very considerably crushed, 

 it is less crushed than is the type specimen. Only a few of the 

 cranial sutures can be distinctly made out. 



The premaxillary bones are almost certainly united as in 

 Dicynodon, and are comparatively narrow. They appear to extend 

 backwards between the nasals on the upper surface of the skull, as 

 Owen believed to be the case in Esoterodon uniseries, and as is the 

 case in many other Anomodonts. The tooth-like processes in the 

 front of the beak appear to be formed entirely by the premaxillaries. 

 They are much more feebly developed than the caniniform processes 

 in the larger species of Oudenodon. In front of the processes the 

 edges of the premaxillaries pass upwards and inwards, meeting each 

 other like the letter V, and forming a narrower depression which 

 looks forwards and downwards, and which no doubt accommodated 

 the sharp hooked point of the mandible. There is no evidence of 

 any teeth in connection with the premaxillaries. 



The maxillary bone is of large size, and forms the greater part of 

 the side of the face. Extending back from the tooth-like process 

 of the premaxillary the maxillary forms a narrow ridge which was 

 probably in life covered with horn. Immediately within the ridge 

 is a rather broad groove to accommodate the horny edge of the 

 mandible. This groove is practically devoid of teeth, but on one 

 side there is seen to be a single tooth about 4 cm. behind the tooth- 

 like process. The specimen is not sufficiently developed to show 

 fully the arrangement of the teeth, and owing to the nature of the 

 matrix further development does not seem advisable. There is, how- 

 ever, evident a row of 9 or 10 large teeth on the inner side of the 

 groove. As the row passes backwards other teeth appear by the side 

 of the main row, and at the back part of the row there are 3 or 4 

 teeth side by side. At the front of the toothed region in the middle 

 line are two fairly large teeth. Unfortunately it is impossible with- 

 out sectioning the specimen to decide in which bone these median 

 teeth are implanted. Possibly they are displaced. 



The palatine bone of the left side is in part fairly well preserved, 

 and very similar to that in the type specimen. It has no teeth. 



Part of the jugal bone is seen on the left side. It forms the whole 

 of the lower margin of the orbit. 



The lachrymal bone appears to be unusually small, and the pre- 

 frontal is also probably smaller than is usual in Anomodonts, though 

 in the absence of the sutures it is impossible to be sure of the exact 

 size and shape. In the upper and anterior corner of the orbit there 

 is a low bony boss which is probably entirely formed by the pre- 

 frontal, 



