TABLE OF CONTENTS. 



CHAPTER I. 



Page. 



Ammophila and her Caterpillars .... 6 



CHAPTER II. 

 The Great Golden Digger (Sphex ichneumonea) . . 33 



CHAPTER in. 



The Inhabitants op an Old Stump (Rhopalutn pecUcella- 



tmn and Stigmus americanus) ..... 42 



CHAPTER IV. 

 The Toilers op the Night {Crabro stirpicola) . . 46 



CHAPTER V. 



Two Spider Hunters [Salhcs 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 Trypoxy- 



lon rubrocincturn^ . . . . . . . 77 



CHAPTER IX. 

 The Bug-Hunters (^Astata unicolor and Astata bicolor) . 88 



