PLATE V. 



Phylloxera conica (Shimer). 



Fig. 26. Young galls, above and beneath— natural size. 



Fig. 27. Young gall, vertical section —enlarged. 



Fig. 28. Mature galls, above and beneath — natural size. 



Fig. 29. Mature galls, variety ; above and beneath — natural size. 



Phylloxera c.-avellana Riley. 



Fig. 30. Young galls, above and beneath— natural size. 

 Fig. 31. Mature galls, above and beneath— natural size. 



