362 



Annals of the South African Museum. 



while the articulation with the coracoidal element is almost straight. 

 Approximately half the glenoid cavity is formed by the scapula. 

 From the narrowest part upwards the bone is very thin. From the 

 upper posterior corner to the middle of the glenoid cavity the scapula 

 measures 43 mm. At its narrowest it is 4 - 5 mm. wide; at its upper 

 border it is 30 mm. wide. The articulation with the coracoid measures 

 8'5 mm. 



Coracoid. Both coracoids are seen. The bone is smaller than the 

 scapula, strongly compressed and expanding considerably at each end. 



B 



Fig. 18. Notochampsa istedana, Br. 



A. Scapula and coracoid. 



B. Proximal half of humerus. 



It forms the lower half of the glenoid cavity. Anterior to the 

 glenoid cavity and just below the articulation with the scapula the 

 bone is pierced by the coracoidal foramen. The distal expansion 

 is very broad, terminates in a convex border and is prolonged more 

 posteriorly than anteriorly. 



The coracoid has a length of '25 mm. in the middle line. Its 

 lower border measures 15 mm., while its narrowest part has a width 

 of only 3 mm. 



The Interclavicle is a narrow elongated strip of bone, not wholly 

 preserved. 



Humerus. The humerus has a long, thin, flattened shaft with a 

 considerably expanded upper end. The lower end is not preserved 

 on either side of the body. The total length of the bone was probably 



