EXPLANATION OF THE PLATES. 



PAGE 



Plate IX. Fig. 1. Aatennarius unicornis 374 



Fig. 2. nitidus 375 



Fig. 2. Perca pulchella 377 



Plate X. Polybrachionia Linnaeana 404 



Fig. 1. Animal pronum auctum. 



Fig. 2. supiDum. 



Plate XI. Fig. 1. A Fossil Jaw in a fragment of the 



Stonesfield Slate 408 



Fig. 2. The Jaw detached and magnified. 



Fig. 3. The second molar tooth magnified. 



Plate XII. Felis planiceps 450 



