92 Wisconsin Academy of Sciences, Arts, and Letters, 
imaicus, Pemphigus Cholodkovsky, 1912. Revue Russ. Ent., XII, 
p. 495, fig. 
Populus cUiata. 
imbricator, Pemphigus (Fitch), 1851. Rept. Reg. Univ. State N, 
Y., Cab. Nat. Hist., p. 68. Eriosoma. 
Betitla sp., Fagus sylvatica, I<\ grandifolia. 
immaculata, Macrosiphum Riley, as a var. of M. fragariae Koch 
which see. 
immunis, Pemphigus Buckton, 1896. Ind. Mus. Notes, IV, p. 51. 
Populus tremuloides. 
impacta, Aphis Walker, 1849. The ZooL, VII, p. 48, app. 
Samhucus nigra. 
impatientis, Aphis Thomas, 1877. 111. State Lab. Nat. Hist. Bui. 
2, p. 12. 
Impatiens hiflora, I. pallida. 
impatientis, Macrosiphum Williams, as a var. of M. camosa Buck- 
ton, which see. 
implngens, Aphis Walker, 1852. List Homop. Insects Brit. Mu¬ 
seum, part 4, p. 1042. 
Betula alba. 
incerta, Aphis Walker, 1849. The Zool. VII, p. 45, app. 
Juniperus communis. 
incertus, Lachnus Schouteden, 1906. Mems. Soc, Ent. Belg., XII, 
p. 203. 
In a foot note on this page Schouteden gives the above name 
to replace L. subterraneus Del Guercio. 
inculta, Aphis Walker, 1849. The Zool. VII, p. 43, app. 
Apium graveolens. 
incumbens, Aphis Walker, 1849. The Zool. VII, p. 35, app. 
Ononis spinosa. 
indecisa, Aphis Walker, 1849. The Zool. VII, p. 45, app. 
Juniperus communis. 
indlcus, Pemphigus Kieffer, 1908. Marcellia, VII, p. 161. 
Coreopsis sp., Fagus sp. 
