168 Wisconsin Academy of Sciences^ Arts, and Letters. 
tiliae, Macrosiphuni (Monell), 1879. BuL U. S. Geol. & Geog. 
Surv. Terr. V, No. 1, p. 20. Siphonophora. 
Tilia americana. 
tincta, Aphis Walker, 1849. The Zool. VII, p. 51, app. 
EpiloMum sp. 
tomentosus, Lachnus (Villers), 1789. Linaei Entomologia Faunae 
Suecicae, J, p. 549. Aphis. 
tormentilliae, Aphis Passerini, 1879. Bui. Soc. Ent. Ital., XI, p. 
48. 
Potentilla tormentilla. 
torticauda, Apliis Gillette, 1907. 'Can. Ent., XXXIX, p. 389, fig. 
Carduus sp. 
tortuosus, Pemphigus Rudow, 1875. Zeit. Ges Natur., (2), XII, 
p. 248. 
Populus nigra. 
tradoides, Chermes Cholodkovsky as a var. of O. strobilobius Kalt- 
enbach which see. 
tragopogonis, Aphis Kaltenbach, 1843. Mon der Pfianzenlause, p. ^ 
124. 
Tragopogon dudius, T. porrifoUus, T. pratensis. 
transieus, Aphis Walker, 1849. The Zool. VII, p. 44, app. 
Polygonum persicaria. 
translata, Aphis Walker, 1849. The Zool. VII, p. 35, app. 
Ononis spinosa. 
transmutata, Aphis Walker, 1849. The Zool. VII, p. 3 7, app. 
Prunus spinosa. 
transposita, Aphis Walker, 1849. The Zool. VII, p. 37, app. 
Prunus domestica. 
tremulae, Asiphum Linnaeus, 1761. Fauna Suecica, p. 261. 
Aphis. 
Populus alda, P. pyramidalis, P. tremula. 
tremulae, Chaitophorus Koch, 1854. Die Pfianzenlause Aphiden, 
p. 8, fig. 
Populus tremula. 
