122 



Annals of the South African Museum. 



The snout is slightly longer, and the nasal bosses are not so well 

 developed as in D. kolbei. The orbit is both relatively and absolutely 

 shorter, although of similar shape. The parietal bar also differs The 

 ridges, instead of approximating most closely to each other in the 

 posterior half of the bar as in D. kolbei, are closest at the front of the 



FIG. 21. Dicynodon rogersi, Br. and Htn. Type, No. 2356. 



X 4. 



bar and diverge gradually posteriorly. The postfrontal does not 

 narrow so rapidly as in D. kolbei and consequently covers a greater 

 area. The preparietal has its two sides parallel and not convergent 

 posteriorly, and forms a large portion of the anterior half of the 

 parietal foramen. The temporal fossa is long and regularly oblong in 

 shape. The preparietal region is hollowed out. 



A rare character displayed by the type is the feeble and anteriorly 

 directed tusks. They arise directly below the nostrils. 



