1871.] PROF. W. H. FLOWER ON THE AUSTRALIAN CASSOWARY. 35 



one which is ankylosed to the sacrum, This latter also bears distinct 

 though small ribs, united on one side and free on the other, and 

 clearly corresponds with the vertebra in the same position in 

 the other species. The additional vertebra is therefore in the pos- 

 terior dorsal, or lumbar region as it is sometimes considered. 



The united sacral vertebrae do not appear to differ materially from 

 those of the other species, though it is difficult to count the com- 

 ponent elements ; the caudal region, however, is shorter by two 

 vertebras, unless these have been lost in preparing the skeleton, 

 though the good adaptation of the surfaces of the bones that are 

 present gives no reason for supposing that such has been the case. 



The sternum differs from that of the common species only in 

 possessing five articular facets on each side for the sternal ribs, in- 

 stead of four, and, of course, in its larger size. The pelvis and limb- 

 bones appear to differ by this latter character only, as is shown by 

 the subjoined Table of dimensions (all measurements taken in a 

 straight line) : — ■ 



