CONTENTS. 



PACE 



Introduction 235- 



Purpose of Thesis 23& 



Systematic Position and Distribution 237 



Review of Literature 238 



Description of Species 247 



Detail of Observations : 



Field of Observation 254 



Tube-building Burrowers: 



Odynerus papagorum 25ft 



Odynerus arvenais 27 1 



Odynerus annulatus 277 



Non-tube-building Burrowers: 



Odynerus dorsalis 281 



Pterochilus 5-faciatus 294 



Users of Deserted Nests: 



Odynerus h ildagi 29& 



Odynerus sulphuritinctus 299 



Potters : 



Eumenes bolli 299 



Eumenes fraternus 301 



Eumenes sp 301 



Summary 301 



Bibliography 30(> 



Explanation of Illustrations. 



(233) 



