Am. Jour. Sci., Vol, XXXVIIf, 1889. 



Plate V. 





4. 



5.x? 



6.x? 



Bin 





F 



9.x2 



] O.xi 



11. x2 12.x? 13.x2 14.X2 15.* 



18. 



19.12 



20.X2 



16.X2 



21. 



American Cretaceous Mammals. 



