EXPLANATION OF PLATE IX. 



Boucs of Froioslega gUjas, oue-tliinl natural size. 



Figs. 1-3. Marginal bones : 1 a, lateral from above ; 2, another lateral from bel()\\ ; 2 a, the sanie from 



one end ; 3, ? caudal marginal. 

 4-7. Ribs ; 7, posterior. 

 Fig. 8. Cervical vertebra of Jlyposaurus reibianus, two- thirds tbe natuial size : a, from (be side; h, f om 



the front ; c, from below ; d, from above. 



