170 PROFESSOR OWEN ON THE GENUS DINORNIS. 
TWENTY-SECOND VERTEBRA (‘7th dorsal, 4 nat. size). 
\ \pm 
ape 






Aspects. 
Fig. 33, lateral; 34, postaxial. 
Struthio. Rudiments may be indicated by the letters hy in Mivart’s fig. 54; but they 
are not noticed in the text. In the transverse direction the hemal surface of the 
centrum is convex, as in Struthio. 
The preaxial surface in Dinornis is subquadrate, through the production of its 
inferior angles, which, like the upper ones, are rounded off. Its transverse concavity 
is less than in the sixth dorsal: it is relatively larger in proportion to the centrum than 
