Pi,ATE IV. — a, the female at ivork girdling a currant stein, natural size; 

 b, girdled portion of a stent ^ much enlarged, to show the character oj 

 the girdle; c, girdled portion of a stein a few days after the girdling 

 was done, much enlaiged, to shoic the egg-scar; d, currant stem cut 

 open to show the egg of the insect, much enlarged. 



