44 



MEMOIRS OF THE CARNEGIE MUSEUM 



duced into a long, narrow and thin postscapula, slightly constricted medially, but 

 expanded distally and with the external surface transversely convex. The coracoid 

 is short, stout, and firmly united with the scapula, the suture remaining throughout 

 more or less distinct. In outline the coracoid is not unlike a quadrant of an ellipse, 

 quite thin along the periphery and much thickene€l at the central angle, which is 

 bounded by the coracoscapnlar suture and the inferior border of the glenoid cavity 

 produced into the posterior border ef the coracoid, and thus forming respectively 

 the longer and shorter radii of an ellipse. There is a large foramen in the coracoid 

 near the coracoscapnlar suture and about midway between the glenoid and anterior 



Fig. 14. External view of right scapula and coracoid of Diplodoeus carnegii (No. 94). About one 

 eleventh natural size. 



borders. The inferior border of the coracoid is rugose, thin, and curved rather 

 sharply inward toward the antero-external border of the sternals to which it was 

 perhaps not directly opposed, the union having been either cartilaginous or muscu- 

 lar. Taken together the coracoid and scapula may be described as forming a rather 

 broad and thin plate, much thickejied about the glenoid cavity and presenting a 

 generally convex external and concave internal surface when viewed longitudinally. 

 It was thin at the edges but much thickened medially. 



See Fig. 14. 



Measurements. No. 84. 



Combined length of scapula and coracoid 1600 mm. 64J in. 



Greatest " " " 1240 " 49| " 



" breadth " " 605 " 32| " 



Least " " " 204 " 8 " 



Length of coracoid 512 " 20J " 



Greatest expanse of glenoid cavity 274 " 10^ " 



