356 



LIEUT. R. BROOM OK 



narrow, and extends back nearly to the pineal foramen. It is, 

 however, doubtful if it reaches the foramen, the appearances 

 being rather in favour of the parietals just meeting in front of 

 the foramen and shutting out the preparietal. The parietal is a 

 fairly large flat bone. The interparietal is of moderate size and 

 forms the upper part of the occiput. The squamosal is large and 

 typically Dicynodont in character. The specimen shows part of 

 the quadrato-jugal in front of the lower part of the squamosal. 



Text-fio-ure 1. 



C\ 



/•'/' \ 



Skull of Pristerodon mckayi Hu,xley. Nat. size. 



Left side and snoiit restored. B.M., R 1810. 



J'r.j frontal ; J.P., interparietal; tTit.Jugal; i., lacrin^al ; J/.c, ii[\axilla ; iVa., nasal; 

 Pa., parietal; Pal., palatine; Pm., prema,xilla ; Pa.F., postf'roiital ; Po.O., 

 post orbital; P.P., preparietal; Pr.F., pv^froiita,! ; Pt.,, pterygoid; P.Vo., 

 prevomer ; T.P., transpalatine. 



The lower jaw is not well preserved. As is seen in one of 

 Huxley's figures, the angular has, as in Dicynodon., a fan-like 

 expansion passing inwards and downwards. In front of the 

 articulation is a plate of bone passing outwards, and forwards, 

 apparently part of the surangular. 



