LIST OF ILLUSTRATIONS 



PAGE 



SEXMACULATUS IN THE LINDEN ROOTS . . 99 

 CRABRO AND HER WHITE MOTHS . . . .103 



CRABRO STIRPICOLA . . . . . . 106 



BOTTLE ON STEM TO MEASURE WORK OF CRABRO . 107 



NEST OF C. STIRPICOLA 113 



AMMOPHILA SLEEPING IN THE GRASS (AFTER 



BANKS) 115 



NEST OF BEMBEX 125 



BEMBEX SPINOL^E LOOKING OUT OF NEST . -131 



BEMBEX 136 



A CORNER OF THE BEMBEX COLONY . . . 137 

 NEST OF CERCERIS NIGRESCENS .... 142 



CERCERIS CLYPEATA 143 



CERCERIS DESERTA : LOCALITY STUDY BEFORE LEAV- 

 ING NEST 153 



PHILANTHUS PUNCTATUS . . . . . 157 

 NEST OF PHILANTHUS PUNCTATUS . . . 163 

 APHILANTHOPS GATHERING ANTS . . . .169 

 TRYPOXYLON RUBROCINCTUM . . . . 185 

 MALE TRYPOXYLON AWAITING THE FEMALE . .191 

 TORNADO WASP (POMPILUS QUINQUENOTATUS) DIG- 

 GING NEST ... . . . . . 197 



POMPILUS QUINQUENOTATUS 199 



EPEIRA STRIX PARALYZED AND HUNG UP ON BEAN 

 PLANT BY POMPILUS QUINQUENOTATUS, OUT OF 

 THE WAY OF ANTS ..... 203 

 NEST OF P. QUINQUENOTATUS . . . .213 

 POMPILUS MARGINATUS 223 



