HEMIPTERA 71 



parts)* ; these may often be found sticking to the underside 

 of leaves of small fruit bushes in the garden. 



5. If dried specimens of any of these, or of any other 

 Hemiptera are to be used, give them a stay over night in a 

 relaxing jar. Some carnivorous forms, like bedbugs and 

 assassin bugs, may be included. 



Fie. 24.— The squash Fig. 25.— A lace-bug 



bug. (From Chittenden). (fromWellhouse). 



6. Collect aphids and scales by bringing in stems bearing 

 colonies. 



7. Set up jars or aquaria for the water bugs, and live 

 cages for the others. 



8. Make slide mounts of the heads taken from cast skins of 



* Many nymphs of leaf hoppers, previous to molting anchor themselves 

 by their beaks deeply sunk into the vein of a leaf on the under side. It is 

 easy to find the cast skins that are left hanging by their beaks; and there 

 is no better material for showing how they puncture the plant tissue, and 

 why they do not get the poison when that is sprayed on the plant. Just 

 cut out a bit of the leaf with the nymph skin hanging to it, and mount it 

 for the microscope by the simple method outlined on page 190. 



