178 Wisconsin Academy of Sciences, Arts, and Letters. 
violae, Rhopalosiphum Pergande, 1900. X3an. Ent. XXXII, p. 29. 
Viola odorata. 
violae, Rhopalosiphum Essig, 19 09. Pomona Coll. Jour. Ent., I, 
p. 4. Misprint, Essig for Pergande. 
Viola odorata. 
virgata, Aphis Del Guercio, 1911. Redia, VII, p. 316, fig. 
Epilodium virgatum. 
viridana, Forda Buckton, 1883. Mon. Brit. Aphides, IV, p. 86, fig. 
DescTiampsia fiexuosa. 
viridanus, Chennes Cholodkovsky, 1896. Zool. Anz., XIX, p. 39. 
Larix decidua, L. siMrica, Picea ahies, P. alba, P. ohovata. 
viridis, Chermes Ratzeburg, 18 43. Stett. Ent. Zeit., p. 202. 
Larix sp., Picea sp., Pinus sp. 
viridis, Chermes Ratzeburg, var. lutescens Cholodkovsky, 1915. 
Dept, of Agr. Central Board of Land Adminis. & Agr., Pet- 
rograd., p. 15, fig. 
Larix decidua, Picea excelsa. 
viridis, Chermes Ratzeburg, var. viridis Cholodkovsky, 1915. 
Dept, of Ag. Central Board of Land Adminis. & Agr., Pet- 
rograd., p. 15, fig. 
Larix sp. 
viridis, RhizoMus Theobald, 1915. The Entomologist, p. 154. 
Picea sitchensis. 
viridulus, Chermes Cholodkovsky, 1911. Zool. Anz,, XXXVII, p. 
175. 
Larix siMrica. 
vitalbae, Aphis Ferrari, 1872. Ann. Mus. Civ. Stor. Nat. Genova, 
III, p. 225. 
Clematis recta, C. vitalba. 
vitellinae. Aphis. Hartig, 1841. Zeit. Ent. (Germar) III, p. 369. 
Food plant not given, 
vitellinae, Chaitophorus (Schrank), 1801. Fauna Boica, II, p. 
103. Aphis. 
Salix alba, S. babylonica, B. fragilis, S. triandra. 
