90 On the Reproduction of the Hemiptera-Cryptocerata. 



a longitudinal motion of the abdomen is observed, the tip 

 resting on the spot where the egg will be deposited. 

 During this movement the minute drop of fluid which 

 affixes the egg to the plant is emitted, and placed in the 

 desired position, the egg is then laid with the micro pyle 

 farthest away from the point of attachment and the female 

 swims away. 



Several days may be occupied by a single female in 

 depositing her batch of eggs, the number of eggs deposited 

 daily decreasing. 



The habits of Naucoris are similar to those of Gorixa, 

 and need not be described. 



The general conclusion arrived at as a result of these 

 observations is that there does not appear to be any sexual 

 selection in the Hcmiptcra-Gryptociraia, 



