LIST OF PLATES, YOL. Y. 



Plate I. 



Illustrative of the Structure of the Xiphosura and Eurypterida. 



Plate II. 



Illustrative of the Sti-ucture of the Ostracodous and Phyllopodous genera 

 of Palaeozoic Crustacea. For details of Plates I. and II., see pages 37, 38. 



Plate III. 



Crinoldea of the Lower Niagara Limestone. For details see page 306. 



Plate IY. 



Anatomical Structures of the Coleoptera. For details see page 504, 



Plates Y-XVI. 



Illustrations of Fossil Invertebrates. For details see pages 610-620. 



