Explanation of Plate 3. 



Aaple I^orcr (Plaginnotus sfecinsus Say). 



1. Place where egg was laid, showing excrement or borings thrown out by 



borer. la. Another more than normally discolored. 



2. Borer or grub in September from egg laid the same season. 



3. Nearly full grown borer. 



4. Adult or beetle. 



5. Hole through which the beetle escaped from the trunk. 



6. Sawdust or borings packed in burrow. 



?\aple Tree Praner (Elaphidion ril/ositin Fabr.). 



7. Grub or borer in its burrow, a portion of the twig being cut away to show 



its work. "ja. Small twig with only a thin shell of bark, the wood 

 being nearly all eaten. 



8. Pupa in the burrow. The base of both twigs represented has been nearly 



eaten off by the larva. 



9. Adult or beetle. 



Cottonv Aaple Tree Scale Insect (Pulvinaria innnmerabilis Rathv.). 



10. Active or recently hatched young. 



1 1. Adult females, many eggs can be found in the woolly masses. 



12. Leaf with many young scales on its under side. 

 14 



