Bui. 66, Pt. IV, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate IV. 



Work of Eutettix tenella on Sugar Beet. 



Fig. 1.— A field of beets cU'stroycrl by •■curly leaf." Figs. 2. 8.— Cages used in the liie-liistory 

 experiments. (Original.) 



