April, '19] 



BALL: THE POTATO LEAFHOPPER 



153 



Fig. 7. The Totato L««aniopi)er; 1, a aad /. tlic loaflK>i)por; c, nympli; d and e, 

 venation of elytron; (/, "suw-likc" ovii)Ositor with which the epgs are thnist into 

 the stems; 2, eggs in the stem; 3 and 4, egg soars in niidril.; A, nymph killed by 

 fungus. 



