Bui. 273, U. S. Dept. of Agriculture. 



Plate III. 



Fig. 1.— Screen at Salisbury Beach, Mass., where 266 Larv/e were Caught 

 During May and June, 1913, and 96 in May, 1914. Showing Beach and 

 Ocean in Background. (Original.) 



Fig. 2.— Screen at Plum Island, Mass., where 42 Larv/e were Caught in May, 

 1914. Newburyport in Background 2 Miles West— Nearest Infested Tree 

 Growth in that Direction. (Original.) 



SCREEN TRAPS FOR WIND-BLOWN GIPSY-MOTH LARV/€ ON 

 MASSACHUSETTS COAST. 



