South African Fossil Reptiles and Amphibia. 135 



region is flat with a well-marked median ridge. The pineal foramen 

 is placed halfway along the parietal bar. In front of it is a narrow 

 preparietal reaching to the level of the front of the temporal vacuity. 

 There is no evidence of a postfrontal. The sutm-es are clearly marked 

 and the postfrontal must be absent, the postorbital passing forward 

 along the orbital border to meet the frontal. 



The palate is long and narrow. The basicranial region is not well 

 displayed ; but the tubera did not extend far below the level of the 

 occipital condyle. 



The maxilla forms nearly the whole of the long and somewhat 

 shallow cheek. The lachrymal is small as far as can be seen ; the 

 prefrontal is larger, and appears mostly on the top of the skull. 



Type. Skull (S.A. Mus. Cat. No. 590.) 



Locality. Pearston, C.P. 



Horizon. Lower Beaufort Beds. (Probably top of Endothiodon 

 zone.) 



DICYNODON ICTIDOPS, Broom. 

 1913. Broom. Bull. Amer. Mus. Nat. Hist., xxxii, p. 446 ; figs. 5, 6, 



A small species. Skull narrow with regularly convex upper surface. 

 Orbits look more outwards than upwards. The nostrils are large and 

 rounded. The tusk is small and directed downwards. The preparietal 

 is large, postfrontal small. Frontals pass back to plane of front of 

 pineal foramen. 



A skull and lower jaw (S.A. Mus. Cat. No. 1078) were obtained at 

 Klipfonteiu, Fraserburg, C.P. The sutures of the top of the skull 

 are indeterminable, but from its general appearance the skull belongs 

 to this species. It has been developed to show the basicranial region. 

 The occipital coudyle is large and of the tripartite type. The foramen 

 jugulare lies at the level of the bottom of the condyle and looks 

 downwards and backwards. The basisphenoidal tubera are large and 

 descend considerably below the level of the coudyle. The foramen 

 ovalis looks outwards and downwards, and most of its lower border 

 is, apparently, formed by the basioccipital. Between the two tubera 

 there is a very deep narrow depression. 



Type in American Museum of Natural History. 



Locality. Beaufort West Commonage, C.P. 



Horizon. Lower Beaufort Beds. (Endothiodon zone.) 



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