276 MAINE AGRICULTURAL EXPERIMENT STATION. I916. 



4 mm. long, and many froth masses were noticed on the small 

 dwarfed plants of Canadian bluegrass growing on rocky 

 ledges: It seems possible that the depauperate condition of 

 the grass and of the froghoppers living on it may be a mutual 

 adaptation to a deficient food supply. 



Adults of lineaius are distinguished from spumarius by the 

 narrow, more parallel sided form and the longer head. The 

 head is rounded angular in front and as wide as the thorax. 



The color is gray with a whitish margin to the costa, bor- 

 dered by a blackish line which fades out toward the end of the 

 elytron. The length is from four to five millimeters. 



Remedies or Control. 



It seems very evident that the most effective control for this 

 species lies in a frequent rotation from grass to some other 

 crop and the general freedom from infestation in timothy 

 meadows not older than two or three years as compared with 

 the great abundance in old meadows, emphasizes this point. 



This applies of course to many other of the grass insects, 

 but on account of the restrictions of this species and the fact 

 that the time during which eggs must be present is extended 

 over a long period, it should be particularly effective. To be 

 of greatest advantage plowing should be done in spring or late 

 in fall. 



It is recognized that there are many situations especially in 

 wooded pastures and rougher meadow land where it is desirable 

 to maintain a grass crop for a long succession of years and it 

 is hoped that measures for reducing or eliminating these pests 

 will make this possible without sacrificing such a large percent- 

 age of the crop. 



Of the measures available for permanent meadows three 

 seem worthy of mention and thorough trial. 



While egg deposition has not been actually observed it is 

 almost certain that the eggs are placed in grass stems and that 

 they remain during fall, winter and early spring in this con- 

 dition. It will be evident that burning of the surface dead 

 grass, when this is allowable, will furnish a means of destroy- 

 ing the eggs of these and many other species. 



