XIV 



CONTENTS. 



Poraminifera, 



Polyoystina, 



Sponges, 



Hydra, 

 Hydrozoa, 

 Acaleph*, 

 Antliozoa, 



Structure of Shell and Spines, 

 Ecliinoderm Larvae, 



CHAPTER X. 



PORAMINIFERA, POLTCTSTINA, AND SPONGES. 



CHAPTER XI. 



ZOOPHXTES. 



CHAPTER XII. 



ECHINODERMATA. 



Polyzoa, 

 Compound Tunicata, 



CHAPTER XIII. 



POLTZOA AND COMPOUND TUNICATA. 



CHAPTER XIV. 



MOLLUSCOUS ANIMALS GENERALLY. 



Shells of MoUusea, 

 Tongues of Gasteropoda, . 

 Development of Gasteropods, 

 Ciliary motion on Gills, . 

 Organs of Sense of MoUusks, 

 Chromatophores of Cephalopoda, 



Bntozoa, 



Turbellaria, 



Annelida, 



Pyonogonidse, 



Entomostraca, 



Suctoria, 



Cirrhipeda, 



Shell of Decapoda, 



Metamorphosis of Decapoda, 



CHAPTER XV. 



ANXULOSA OR WORMS. 



CHAPTER XVI. 



CRUSTACEA. 



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