DOOR-STEP NEIGHBORS 



79 



complishment of my wire-waisted wasp. On several 

 occasions since I have observed the same manoeuvre, 

 which is doubtless the regular procedure with this 



and other species. 

 The smaller or- 

 ange-spotted wasp 

 just alluded to in- 

 dicated to me the 

 location of her den 

 by pausing sug- 



gestively in front 

 of a tiny cairn. In 

 this instance a 

 small flat stone, 

 considerably larger 

 than the tunnel, 

 had been laid over 

 the opening, and 

 the others piled 

 upon it. On two 



