1899] 



ENTOMOLOGICAL, NEWS. 



141 



east of Missouri, where it appeared about the year 1870, had been 

 uniformly more and more recent until the present, in Ohio. It was 

 not until 1896 that it wa.s observed about Cincinnati, from whence 

 it has gradually but steadily moved northward for a distance of 

 about sixty miles. From the locality where tbe species was first 

 reported it has made its way northward fully 140 miles, and through 





Map No. 3. 



a section where the cabbage is less cultivated than in the Cincin- 

 nati region, and other food plants like mustard, etc., not moreabun- 

 dant . 



The first of the two earliest reports received came from a point 

 about fifteen miles from where the Big Kenawha river empties into 

 the Ohio, while the second came from a point about thirty-five miles 

 below the mouth of the Big Sandv river and at the mouth of the 



