16 BULLETIN" 254, U. S. DEPARTMENT OF AGRICULTURE. 
during the heat of the day when the leafhoppers are most active and 
jump at the least provocation. 
Where the species is infesting pastures or grass lands close pasturing 
or cutting while it is in the egg stage is advised. Especially would 
this prove beneficial in the Northern States where the length of the 
egg stage covers several weeks. So far as the observations of the 
author go it would appear useless to burn grass for the destruction 
of the eggs, as when the leaves and stems wither or dry up the eggs 
do not hatch. Seemingly the eggs must have the moisture of at least 
the surrounding tissue for hatching. However, the burning of the 
grasses in which the species may be hibernating in the Northern 
States would no doubt destroy many of the adults. • 
WASHINGTON '. GOVERNMENT PRINTING OFFICE ; 1915 
