EXPLANATION OF PLATES. 

 Figures natural size except where otherwise noted. 

 Plate 28. 

 Fig. 1. Galls of Disholcaspis acetabula Weld. 



2. Galls of Disholcaspis lacuna Weld. 



3. Galls of Disholcaspis terrestris Weld on Q. stellata. 



Plate 29. 

 Fig. 4. Galls of Disholcaspis globosa Weld. 



5. Fresh galls of Dryocosmus favus Beutenmueller on Q. rubra. 



6. Same. Old gall on Q. catesbaei. 



7. Same. Individual galls cut longitudinally, X 5. 



Plate 30. 

 Fig. 8. Galls of Trigonaspis radicola Ashmead. 



9. Galls of Biorhiza caepuliformis (Beutenmueller). 



10. Galls of Xystoteras contorta Weld on Q. breviloba. 



11. Same. On Q. stellata. 



Plate 31. 



Fig. 12. Galls of Odontocynips nebulosa Kieffer. 

 13. Gall of Andricus championi Ashmead. 



Plate 32. 

 Fig. 14. Galls of Andricus rhizoxenus (Ashmead) on Q. reticulata. 



15. Galls of Callirhytis hartmani Weld. 



16. Galls of Callirhytis corallosa Weld on Q. chapmani. 



17. Same. On Q. macrocarpa. 



Plate 33. 

 Fig. 18. Galls of Callirhytis maxima Weld. 



19. Galls of Callirhytis enigma Weld on Q. catesbaei. 



20. Same. Individual old galls, X 5. 



21. Galls of C'llirhytis futilis Osten Sacken (Agamic generation). 



Plate 34. 

 Fig. 22. Galls of Callirhytis apicalis (Ashmead). 



23. Galls of Callirhytis ovata Weld. 



24. Galls of Callirhytis fulva Weld. 



25. Galls of Bassettia floridana Ashmead, X 2. 



Plate 35. 



Fig. 26. Gall of Callirhytis elliptica Weld, X 5. 



27. Galls of Eumayria floridana Ashmead. 



28. Gall of Compsodryoxenus illinoisensis Weld. 



Plate 36. 

 Fig. 29. Galls of Compsodryoxenus tenuis Weld. 



30. Galls of Callirhytis ellipsoida Weld. 



31. Galls of Callirhytis rubida Weld. 



Plate 37. 

 Fig. 32. Weld 405. 



33. Weld 1501. 



34. Weld 408. 



35. Weld 707. 



36. Weld 407. 

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