xii CONTENTS 



Phylum Mollitsca pages 



The Fresh-water Mussel 120-130 



Other MoUusks 130-131 



Phylum Echinodermata 



The Starfish 132-141 



Other Echinoderms 141-142 



Phylum Arthropoda 



The Crayfish 143-154 



Other Cnistaceans 154-155 



The Locust 156-163 



Other Insects 163-168 



Classification of Animals 169-179 



Appendix 181-195 



