344 REporT OF THE ENTOMOLOGISTS. se we 
EXPLANATION OF PLATES. 
Puate XVIIL.— Young willow whips injured by the cotton- 
wood leaf-beetle. | 
Pirate X1TX.— Uninjured willow whip and one which was in- 
jgured at a early in season causing it to branch. 
Pratt XX.—1. Willow leaves showing eggs attached and w- 
jury by young larvae. 2. Larva natural size and enlarged. 
8. Pupae attached to willow leaf, natural size. 4. Pupa en- 
darged. 5. Beetles natural size and enlarged. 
PratEe XXI.— Machine for catching the beetles. 
Prats XXII.— Machine in position ready for use. 
Prate XXIII.— Hand power machine. 
A ta | , ee ul 
