Fig. 11. All stages of the Squash Bug {Anasa triatis) 

 At the left of the center is the female, laving eggs, be- 

 low the center is a row of eggs, and below and above 

 the female are nymphs without wing-pads : while at the 

 upper right corner is an older nymph with wing-pads. 

 Photographed in the field. %vith the insects alive and in 

 their own natural positions. One-fourth natural size. 



Fig. 12. Eggs of Pai'asites on Squash Bugs. It was through 

 the abundance of these parasites, detroyiug the fall brood of 

 IWOl after it became adult, that the bugsare rare and crops are 

 free from serious injury during the season of 1902. Slightly 

 more than twice natural size. 



