Contents 



CHAPTER PAGE 



XII THE WHITE-FACED DECTICUS : 

 THE LAYING AND THE HATCH- 

 ING OF THE EGGS . . .231 



XIII THE WHITE-FACED DECTICUS: 



THE INSTRUMENT OF SOUND . 246 



XIV THE GREEN GRASSHOPPER . 275 



XV THE CRICKET: THE BURROW; 



THE EGG .... 300 



XVI THE CRICKET: THE SONG; THE 



PAIRING .... 327 



XVII THE LOCUSTS: THEIR FUNC- 

 TION ; THEIR ORGAN OF SOUND 354 



XVIII THE LOCUSTS : THEIR EGGS . 378 



XIX THE LOCUSTS : THE LAST MOULT 401 



XX THE FOAMY CICADELLA . . 424 



INDEX 447 



