B 



FIG. 144. A, the giant water-bug or electric-light bug (Belostoma americana] ; /?, 

 the western water-bug (Serphus sp.), male, with eggs deposited on its back by 



the female. (Natural size) 



(After Kellogg) 



FIG. 145. A water-strider (Hygrotrechiis remigus Say). (Enlarged) 



(After Lugger) 



1 10 



