THE PLUM BARK BEETLE AND CABBAGE BUTTERFLIES. 25 



PREVENTIVE AND REMEDIAL MEASURES. 



All branches, etc., which are noticed to be infested should 

 be cut off and burned early in June. Old worthless trees should 

 be cut down and burned in the middle of June. 



FIG. IX. BRANCH OF PLUM TREE, SHOWING DAMAGE TO WOOD BY PLUM 



BARK BEETLE. 



These beetles have a natural enemy, the woodpeckers, which 

 have been known to strip off the bark and splinter the surface of 

 the wood in their efforts to get at the pupae. 



CABBAGE BUTTERFLIES. 



Pieris brassicae, Linn., and P. rapae, Linn. 



The larvae of these two species, popularly known as the 

 Large and Small White Cabbage Butterflies, have proved 

 very troublesome in different parts of Warwickshire, Worcester- 

 shire and Staffordshire, more particularly in gardens and plots 

 than in open fields. 



As usual they have attacked a variety of plants. The follow- 

 ing have been reported : Cabbage, turnip, beet, and cauliflower. 



