INDEX. 117 
Page. 
Leafhoppers affecting cereal and forage crops in North Carolina, 1907-1909. . . 39 
Dakota, 1905-1906 39 
Oklahoma, 1905, 1908 39 
Pennsylvania, 1909 39 
South Carolina, 1908-1909. . . 39-40 
Dakota, 1905 40 
Tennessee, 1905, 1908 40 
Texas, 1905-1909 40 
Utah, 1910 49 
Virginia, 1906 40 
1909 46 
Washington State, 1908 41 
injury, nature and extent 13-15 
previous records 38^1 
insect enemies 32-35 
introduction 11-12 
life history, general 20-21 
more important species 52-106 
observations in 1909 41-47 
1910 47-50 
parasites 33-34 
remedial measures 35-38 
reptile enemies 31-32 
scope of present investigation. . . 12 
species principally concerned in 
destructive attacks 18-19 
spider enemies 34-35 
attack by fungous disease, Empusa grylli 57 
explanation of anatomical terms 51-52 
systematic position 50-51 
Legumes, food plant of Agallia sanguinolenta 16 
Empoasca inali 16 
Liburnia in Pennsylvania in 1909 45 
puella, in District of Columbia, in 1909 41 
Lights, suggested use against destructive leafhopper (Athysanus exitiosus) 91 
Lonatura minuta in California, 1910 49 
(?) in North Dakota, 1909 42 
Lobipes lobatus, enemy of Agallia sanguinolenta 28 
Lophortyx californicus, enemy of Jassidse 29 
Scolops sp 27 
Mangora maculala, enemy of leafhoppers 34 
gibberosa, enemy of leafhoppers 34 
Marila americana, enemy of Agallia sp 28 
Headowlark (see also Sturnella magna.) 
enemy of leafhoppers 26 
Megaquiscalus major, enemy of Jassidse 29 
Mcleagris gallopavo, enemy of Jassidse 29 
Melospiza georgiana (see also Sparrow, swamp). 
enemy of Jassidse 29 
lincolni (see also Sparrow, Lincoln). 
enemy of Jassidse , 29 
melodia (see also Sparrow, song). 
