122 Wisconsin Academy of Sciences, Arts, and Letters, 
papaveris, Aphis Fabricius, 1776. Genera Insectorum, II, p. 388. 
Aegopodium podagraria, Amaranthus retrofiexus, AristolocJiia clem' 
atitis, Atriplex hastata, A. hortensis, A. nitens, A. patula, Beta 
vulgaris, Bougainvillaea virescens, CannaMs saliva, Capsella 
bursa-pastoris, Chenopodium album, C. botrys, Cirsium arvense, 
Cucumis sativus, Cucurbita pepo, Eryngium campestre, E, plan- 
um, Fmnaria sp., Galium aparine, Hypericum hirsutum, H. per¬ 
foratum, Matricaria chamomilla, M. inodora, Ophrys aranifera, 
Orchis coriophm'a, Papaver dubium, P. nudicaule, P. rhoeas, P, 
somniferum, Phaseolus vulgaris, Ranunculus acris, Scorzonera 
hirsuta, Senecio vulgaris, Setaria verticillata, 8. viridis, 8oh 
anum nigrum, 8. tuberosum, Vida faba, Zea mays. 
papyracea^, Hormaphis Oestlund, 1887. Aphididae of Minnesota, 
p. 19. . 
Betula alba, papyracea. 
parietariae, Aphis Lichtenstein, 1884. La Flore des Aphidens, p. 
38, no description. 
Parietaria sp. 
partheuocissi, Aphis Williams, 1911. Aphididae of Nebraska, p. 
53. 
Psedera quinquefolia. 
particeps, Aphis Walker, 1848. The Zool. VI, p. 2217. 
Cynoglossum officinale. 
parvus, Aphis Theobald, 1915. Bui. Ent. Research VI, p. 127, fig. 
Chrysanthemum sp. 
parvus, Lachnus Wilson, 1915. Trans. Amer. Ent. Soc. XLI, p. 
104, fig. 
Pinus rigida, P. virginiana. 
pasanlae, Myzocallis Davidson, 1915. Jour, Econ. Ent. VIII, p. 
424. 
Pasania densiflora. 
pasaniae, Trichoslphum Okajima, 1908. Bui. Coll. Agr. Tokyo 
Imp. Univ., VIII, No. 1, p. 23 of separate. 
Quercus acuta, Q. cuspidata, Q. serrata. 
passeriniana, Cerosipha Del Guercio, IS00. Nuov. Relaz. Staz. 
, Agr, Fir., II, p. 117. 
8alvia splendens. 
