Bui. 273, U. S. Dept. of Agriculture. 
Plate V. 
Fig. 1.— Showing Standpipe, Merrimac, Mass. Arrow Points to Screen Trap 
on Top. (Original.) 
I! ! 
Fig. 2.— Screen on Standpipe, Merrimac, Mass., at Close Range, where 141 
Larv/e were Caught During May and June, 1914. (Original.) 
SCREEN TRAP FOR WIND-BLOWN GIPSY-MOTH LARV/E, MERRIMAC, 
MASS. 
