PLATE VIII. 



Photo. 1. Eggs of Notcnecta irrorata inserted in the stem of money- 

 wort. 



Photo. 2. Egg of Notonecta undulata on edge of cattail leaf. 



Photo. 3. Eggs of Notonecta insulata on Chara. 



Photo. 4. Eggs of two species of Notonecta N insulata above, N. 

 variabilis below. 



Photo. 5. Corixid eggs on a submerged twig. They are often much 

 more abundant than this. The twig here photographed was a part of 

 a six-foot branch covered throughout. The twig is a fair sa-nple. 



Photo. 6. Egg of Corixid enlarged. 



(282) 



