Am. Jour. Sci., Vol. XLIII, 1892. 



Plate XI. 



&x3 



dx.Z 



a &x3 



ds3 



Cx2 



d& 



d& 



a b*-2 cs2 



&x3 



dxz 



1"W 



&<8 



Cx3 





/^ 1 



American Cretaceous Mammals. 



&3 



