264 Wisconsin Academy of Sciences, Arts, arid Letters. 
Laurus laurustinus? 
Aphis pomi DeGeer. 
Lavatera sp. 
Aphis epiloMi Kittel. 
Aphis lavaterae Kittel. 
Lavatera arborea. 
Aphis malvae Koch. 
Leersia oryzoides. 
Sipha glyceriae Kaltenbach. 
Leersia virginica. 
Tetraneura graminis Monell. 
Lemna gibba, 
Siphocoryne nymphaeae Linnaeus. 
Lemna minor. 
Aphis samhuci Linnaeus. 
Siphocoryne nymphaeae Linnaeus. 
Lemna iK)lyrhiza. 
Siphocoryne nymphaeae Linnaeus. 
Lemna trLsulca. 
Siphocoryne nymphaeae Linnaeus. 
Leontodon sp. 
Trama troglodytes Heyden. 
Leontodon autumnalis. 
Macrosiphum picridis Fabricius. 
Machrosiphum sonchi Linnaeus. 
Leontodon hispida. 
Macrosiphum picridis Fabricius. 
Machrosiphum sonchi Linnaeus. 
Leontodon taraxacl. 
Aphis plantaginis Schrank. 
Macrosiphum taraxaci Kaltenbach. 
Trama horvathi Del Guercio. 
Trama radicis Kaltenbach. 
