400 TROPICAL WILD LIFE IN BRITISH GUIANA 



with a few loads of clay, plug the entrance and her work is 

 completed. 



She has deposited all her eggs within an hour and they 

 are safe in isolated cells. The three will pass through their 

 metamorphosis as one. They will eat and grow and pupate 

 together, and issue into the world almost at the same moment. 

 Thus the hlack reed-wasp solves the problem very simply. 

 She brings her offspring into the w orld as triplets ! 



