Feb. 2, 1920 



European Frit Fly in North America 



461 



Table II. — Record of adults of Oscinis frit reared in cages at La Fayette, Ind., in the 



summer of igi6 



{The sign X indicates dates on which flies were introduced into cage. Observations were then made 

 daily until the first fly emerged and thereafter only on dates indicated] 



