182 



Annals of the Carnegie Museum. 



Evenly convex throughout, the sternal body shows but three pairs 

 of lines upon this view — the pair of muscular lines of the pectoral 



Fig. 9. Below is an anterior view of the sternum of Ardea herodias, showing 

 the decussation of tlie coracoidal grooves. Above, lifted from their position, are the 

 coracoids with dotted line showing the extent to which they decussate. The scapulae 

 are articulated above these, but the n. fiircula has been removed. Natural size, and 

 the bones from the same specimen as Fig. 8. 



muscles ; the subcostal lines ; and a pair, each oiie of which com- 

 mences at the middle point of the inner border of the xiphoidal in- 



