24 Annals of the South African Museum. 



in length and 105 mm. at its greatest breadth. The olecranon 

 process, so prominent in Pareiasaurus baini, is not developed to 

 quite so great a degree, although it is much more pronounced than 

 in Pareiasaurus serridens. The process which lies to the outer side 

 of the head of the radius is triangular and has a base of 40 mm. 



A number of isolated metacarpals and phalanges were found, but 

 their positions had been considerably disturbed. 



PELVIS. 



The left innominate is practically entire, and there is a large 

 portion of the right side. The pelvis shows differences from those 

 of Pareiasaurus and Propappus rogersi and from that provisionally 

 assigned by Lydekker to Propappus omocratus. 



The axis of the ilium is directed more forwards and outwards than 

 in Propappus rogersi, and the whole ilium is longer and of a more 

 slender appearance. The crest is almost straight, 225 mm. in 

 length, posteriorly being turned over a little inwards. Anteriorly 

 the ilium is twisted, the anterior edge being turned outwards below, 

 so that, from the front, the ilium appears to be almost horizontally 

 flat. Internally the ilium is concave for the reception of the sacral 

 ribs. Transversely it measures 90 mm., while in its narrowest part 

 it measures 67 mm. 



The acetabulum is shallow, and looks much more downwards than 

 in Pareiasaurus or Propappus rogersi. It is smaller than that of the 

 latter, its greatest width being only 97 mm., and its transverse 

 measurement 86 mm. The greatest part of the acetabulum is 

 formed by the ilium, which is anchylosed to the ischium. The 

 sutures between the pubis and the other bones cannot be 

 distinguished. 



The distance between the anterior part of the symphysis and the 

 point where the pubis probably joins the ilium is 165 mm. Down- 

 wards from the acetabulum the pubis is thickened and bent, as in 

 Propappus rogersi and Pareiasaurus, forming a surface for the 

 supposed cartilaginous prepubis. This surface is 85 mm. long and 

 up to 24 mm. broad. The pubic foramen lies behind, and at the 

 base of, this thickening, and is much narrower and deeper than the 

 foramen in Propappus rogersi . 



The ischium measures 165 mm. by 155 mm., and is quadrangular 

 and plate-like in form. Posteriorly the corner is furnished with 

 a short, outwardly directed process. The two sides of the pelvis 

 are anchylosed along the symphysis, which is considerably thickened, 



