148 



1,EAF-BEETLKS. 



tionis Fal)., a smaller \ello\vish-reil beetle, marked with longitu- 

 dinal black lines, tbe outer ones on each wing-cover being inter- 

 rupted in such a manner as to look like an exclamation .sign ( !). 

 The beetle is sometimes very numerous upon wild roses, destroy- 

 ing the flowers almost entirelx. lUit as our wild roses in the 

 prairies are decidedly a bad weed we should not complain even if 

 it is a rose that sufifers. C. liiiiata Fab., a peculairly colored 

 light brown beetle, marked with darker browti. has similar food 

 habits. 



Several other membeis of the genus Chrysomcla are very 

 destructive to willows in our wind breaks. All can be fought 

 by the same means, i. e., P'aris-green or London-purple; these 

 arsenites should be used at the rate of one pound in from seventy- 

 five to one hundred gallons of water, and applied bv machines, of 

 which many very effective and cheap ones, especially constructed 



Fig. 152.— 7.Jiia tremulw, Fab.— After Brehtn. 



