WASPS, SOCIAL AND SOLITARY 



During this time the red wasp returned regularly to the 

 red nest, the blue to the blue, and so on. They were 

 watched for an hour and a half on the following day 

 with the same result, so that it seems quite certain that 

 spinolae has only one nest at a time. To feed two larvae 

 at once, with interlopers thrown in, would be a heavier 

 task than the most determined industry could accom- 

 plish. 



