CONTENTS 



CHAPTER 7 SOCIAL PARASITES . . .151 



Ant guests — Social parasites — How cuckoo bees and wasps 

 arose — Parasitic ants — Parasitism and degeneration — Sum- 

 ming up parasitism 



CHAPTER 8 THE TERMITES . . . .169 



Nests — Nuptials — Food and agriculture — Termites as pests 

 — Termites and tropical plant-life — Castes — Theories of caste 

 formation — Growth of colonies 



CHAPTER 9 INSECT SOCIETIES . . .191 



Reproduction — Food and social life — Origin of social be- 

 haviour — Insect societies as families — Study for the future 



FURTHER READING 211 



INDEX 213 



