Fig. 



1 8b. Stalked eggs of lace winged fly. 



19. Pitch tip moth, Pinipcstris ::iinincrmani Grote. 



20. Work of pitch tip moth, Pinipcstris ziinmcnnani Grote, in a shoot, showing its 



abortive character and the peculiar .small pitch mass near its base. 



21. Pitch twig moth, Rctinia coiiistockiniia Fern. 



22. Spittle insect, Apliroplwra parallcia Say. 



23. Adult of pine leaf miner, Gclcchia pinifoUcHa Chamb. 



499 



