ILLUSTRATIONS. 



PLATES. 



Page. 



Platk I. Violet leaves showing injury Ijy the Greenhouse Leaf-tyer. Frontispiece 



II. Violets showing injury by Plant-lice 42 



III. Leaves of violets showing injury by "gall fly" larvfe 48 



IV. Prodenki commelinsc, eudiopta and ornithogaUi 58 



FIGURES. 



Fig. 1 . Pldyctxnia ruhigalis in different stages 8 



2. Pionca ferrugalis, venation of wings 8 



3. Loxoistege similalis, different stages 9 



4. Fumigatmg box, showing trays and coleus cuttings 21 



5. Diagram illustrating method of determining cubic contents of green- 



houses - - 23 



6. Violet house prepared for fumigation 24 



7. Einpln/tns rdiiadryisis, female, larva, pupa, and cocoon 27 



8. Emphiitus canadensis, violet leaves showing injury; also eggs, egg cells, 



larvje in different stages, and adult at rest 28 



9. TetranycJms bimuculatns, adult 36 



10. TetranycJms bimacidatns, palpus 36 



11. TetranycJais himactdatus, claws 36 



12. Hand sprayer 41 



13. Parts of hand sprayer 41 



14. Tip and greenhouse nozzle 42 



15. Rhopcdosiphwm viohv, winged and wingless females and nymphs 44 



16. Diplosis violicola, adult 48 



17. Peridroma saucia, moth, eggs, and larva 51 



18. Noctua c-nigrum, moth and larva 54 



19. Prodenia commelinse, moth and larvte 60 



20. Lachnosterna arcuata, egg, larva, pupa, and beetle 75 



21. Agriotes mancus, beetle and larva 77 



22. Euptoieta claudia, different stages 80 



23. Penthina nimbatana, different stages 85 



24. Arami gits fuller i, different stages 89 



25. HopUa ccdlipyge, beetle 97 



26. Rhynchites bicolor, beetle 99 



27. Trichius piger, beetle 101 



28. Loxostege ohliteralis, different stages 104 



29. Sciara, inconstans, different stages 109 



6 



