580 INSECTS AT HOME. 



proboscis, or against that part of the proboscis which is oppo- 

 site to the knee. The anterior feet then come to its assistance. 

 The bug presses its proboscis with its feet against the sheath, 

 so that this portion of its proboscis is then stopped in the 

 groove or furrow. Finally, it presses the rest of its proboscis 

 against the sheath with the same feet, and thus causes it to 

 slide into the groove. As soon as the proboscis has once re- 

 entered, it stays there.' 



