TABLE OF CONTENTS 



PART II 



PAGE 



XII. RELATION OF APUS TO THE OTHER CRUSTACEA 

 LIMULUS 173 



XIII. THE TRILOBITES 209 



XIV. THE EURYPTERID.*: 237 



XV. THE NEW CLASSIFICATION PROPOSED 252 



XVI. PERIPATUS AND THE TRACHEATA 279 



APPENDICES 291 



LITERATURE 313 



