TABLE OF CONTENTS. 



CHAPTER I. 



PAGE. 



AMMOPHILA AND HER CATERPILLARS .... 6 



CHAPTER II. 

 THE GREAT GOLDEN DIGGER (Sphex ichneumonea) . . 33 



CHAPTER III. 



THE INHABITANTS OF AN OLD STUMP (Rhopalum pedicella- 



tum and Stigmus americanus) ..... 42 



CHAPTER IV. 

 THE TOILERS OF THE NIGHT (Crabro stir jyf cola) . . 46 



CHAPTER V. 



Two SPIDER HUNTERS (Salius conicus and Aporus fasci- 



atus) 53 



CHAPTER VI. 



AN ISLAND SETTLEMENT (Bembex spinolae) ... 58 



CHAPTER VII. 

 THE LITTLE FLYCATCHER (Oxybelus quadrinotatus) . . 73 



CHAPTER VIII. 



THE WOOD-BORERS ( Trypoxylon albopilosum and Try poxy- 

 Ion rubrocinctum) . . . . . . . 77 



CHAPTER IX. 

 THE BUG-HUNTERS (Astata unicolor and Astata bicolor) . 88 



