22 Annals of the South African Museum. 



430 mm. in length, has an average height of 20 mm., and is about 

 15 mm. thick. The cervical ribs are displaced and thrust forward. 



SHOULDER GIRDLE. 



Both sides of the girdle are well preserved, the left one being 

 complete save for a small part of the precoracoid, and the right one 

 lacking rather more of the coracoid and precoracoid. In general 

 appearance the girdle resembles the known parts of Propappus rogers i, 

 the chief differences lying in the smaller size of the glenoid cavity 

 and the greater width of the scapula. 



The scapula is anchylosed to both the coracoid and precoracoid, 

 and with the former forms the whole of the glenoid cavity. This 

 consists of two unequal parts, that formed by the scapula being the 

 larger. At the anterior end of the cavity on the suture line there is 

 an appreciable pit. The cavity is much smaller than in Propappus 

 rogersi. The large precoracoid foramen is present, and the groove 

 continuous with it in the scapula is very deep. 



The coracoid is much thicker than the precoracoid, and is 

 truncated at its posterior border. 



The precoracoid is a thin, expanded bone which almost certainly 

 forms no part of the glenoid cavity. The anterior border is thickened, 

 but the whole of the lower border is missing. 



The following are the principal measurements : 



Posterior end of coracoid to top of acromion 272 mm. 



Greatest width of glenoid 82 , , 



Height of scapula above acromion 237 , , 



Width of scapula immediately above acromion 79 ,, 



Thickness of scapula immediately above acromion 38 ,, 



Width across top of scapula 124 ,, 



Length of acromion 73 , , 



Maximum height of acromion 52 ,, 



Distance between anterior and posterior borders of cora- 

 coid and precoracoid 197 ,, 



The clavicles and interclavicle are almost complete. As in 

 Pareiasanrus serridens, the clavicles fit into an irregular groove in 

 the front of the lateral process of the interclavicle. They meet just 

 in the middle line without fusion. The interclavicular process 

 measures 245 mm. from side to side. The ventral process was 

 probably about 200 mm. long, possessing an anterior median ridge 

 proximally which dies away about half-way along the length. The 



