SIB RICHARD OWEN ON THE STERNUM OF DINOBNIS ELEPHANTOPUS. 3 



On the inner (upper) surface of the sternum the shallow depressions behind the 

 inflected anterior border repeat the pneumatic foramina, but are fewer in number than 

 in the subject of plate vii., p, n, of the above-cited volume. 



Regarding the sternum as the most characteristic of the single bones of the bird's 

 skeleton, and since the evidences of the distribution of the kinds of Moa in New Zealand 

 mostly consist of detached bones, the record of such a specimen as the subject of the 

 foregoing description may not be without its use. 



DESCEIPTION OF THE PLATE. 



PLATE I. 



Sternum of Dinornis elejjhantopus, nat. size. 

 Fig. 1. Outer surface : a, b, anterior border ; c, c, costal border ; d, coracoid articular 



surface ; /, /, posterior vacuities ; g, xiphoid notch ; h, h, lateral processes ; 



m, anterior costal articular surface ; w, posterior costal articular surface. 

 Fig. 2. Left costal and coracoid border ; m and n as above. 

 Fig. 3. Eight costal border ; m and n as above. 



b2 



