Chapter II: Introduction: TO PART II. (Hydrida) 129

The Phylum Coelenterata and the Class Hydrozoa 129
Structure of Hydra 130
Capture and Ingestion of Prey: Digestion 133
Colour 134
Behaviour 135
Reproduction 136
Development of the Egg 139
Enemies 139
Coelenterates of Brackish Water 139
Freshwater Coelenterates other than Hydra 141
History of the Study of Hydra 142
Bibliography of Hydra 143

GLOSSARY OF TECHNICAL TERMS USED IN PART II. 145

LIST OF THE INDIAN HYDRIDA 146