244 Wisconsin Academy of Sciences^ Arts^ and Letters, 
Forsythla viridisslma. 
Macrosiphum tadaci Pergande. 
Fragaria sp. 
Aphis forhesi Weed. 
Aphis rumicis Linnaeus. 
Macrosiphum fragariae immaculata Riley. 
Macrosiphum minor Forbes. 
Macrosiphum rogersii Theobald. 
Macrosiphum trifolU Pergande. 
Myzus fragaefoUi Cockerell. ■ 
Myzus porosus Sanderson. 
Fragaria grandiflora. 
Macrosiphum granarium Kirby. 
Fragaria vesca. 
Aphis chloris Koch. 
Aphis fragariae Walker. 
Macrosiphum fragariae Koch. 
Macrosiphum fragariella Theobald. 
Myzus fragariae Theobald. 
RMzoMus sonchi Passerini. 
Frasera speciosa. 
Macrosiphum martini Cockerell. 
Fraxinus sp. 
Pemphigus fraxini Hartig. 
Fraxinus amorlcana. 
Prociphilus fraxini Linnaeus. 
Prociphilus fraxinifoUi Riley. 
Phylloxera? fraxini Stebbins. 
Fraxinus dipetala. 
Prociphilus fraxini-dipetalae Essig. ' 
Fraxinus excelsior. 
Aphis fraxini Fabricius. 
MyzocallU coryli Goeze. 
Prociphilus humeliae Schrank. 
Prociphilus nidiflcus Low. 
Prociphilus fraxini Linnaeus. 
Fraxinus nigra, 
Prociphilus fraxinifoUi Thomas. 
