WASP STUDIES AFIELD 



FIG. ii. Another form of burrow made by Pompiloides tropicus. 

 Natural size. 



two individuals of a much smaller species of Pompiloides, 

 were discovered out foraging. We watched them for an 

 hour or more as they walked along on the ground somewhat 

 nervously, examining with particular care the base of all 

 clumps of short grass. 



A month later we chanced to see a P. tropicus foraging 

 more actively. She alighted boldly upon a large spider- w T eb 

 in the grass (one of the spreading kind with a den or lair 



