32 Wisconsin Academy of Sciences, Arts, and Letters. 
alliariae, Macrosiphiun (Koch), 1855. Die Pflanzenlause Aphi- 
den, p. 160, fig. Siphonophora. 
Lactuca macrophylla, L. scariola, Lapsana communis, Sisymbrium 
alliaria, S. officinale, SoncJius oleraceus. 
Probably Linn, was meant for Koch as Koch refers the species to 
Linnaeus in the subject matter. 
alliariae, Macrosiphum (Koch), 1855. Die Pflanzenlause Aphi- 
den, p. 177, fig. Siphonophora. 
No food plant with the original description. 
Sisymbrium alliaria, S. officinale. 
allii, Aphis Lichtenstein, 1884. La Flore des Aphiden, p. 11. No 
description. 
Allium sp. 
alni, Myzocallis DeGeer, 1773. Memoires des Insects, III, p. 47, 
fig. Aphis. 
Alnus glutinosa, A. rhombifolia. 
alni, Chermes Kalm, 1770. Travels in North America (English 
Translation), I, p. 154. 
Alnus sp. 
alni, Glyphina (Schrank), 1801. Fauna Boica, II, p. 107. Aphis. 
Alnus incana, A. glutinosa, Betula alba. 
alni. Pemphigus Provancher, 1890. Petite Faune Ent. Can. Ill, 
p. 320. 
Alnus sp. 
alnifoliae, Myzocallis (Fitch), 1851. Kept. Reg. Univ. State N. 
Y. *Cab. Nat. Hist., p. 67. Lachnus. 
Alnus rubra, A. rugosa. 
alnifoliae. Pemphigus Williams, 1911. Aphididae Nebraska, p. 7. 
AmelancMer alnifolia. A. spicata. 
alter, Symdobius Mordwilko, 1908. L’ann. de Musee Zool. L’Acad. 
Imperial des Sciences de St. Petersburg, XIII. p. 378. 
Betula alba. 
alterna, Aphis Walker, 1849. The Zool, VII, p. 43 app. 
Salix caprea. 
althaea. Aphis Harris, 1776. Exposit. Eng. Ins., p. 66, fig. Identi¬ 
fication of insect is not clear. 
