118 Wisconsin Academy of Sciences, Arts, and Letters, 
oenotherae, Aphis Oestlund, 1887. Aphididae of Minnesota, p. 62. 
EpiloMum sp., Oenothera t)ertiana, 0. Mennis, 0. caespitosa, 0. 
serrulata. 
oenotherae, Myzus Williams, 1911. Aphididae of Nebraska, p. 64. 
Oenothera Mennis, 0. hertiana. 
cenotherae, Pemphigus Williams, 1891. Special Bui. No. 1, 
Univ. Neb. Dept. Ent. p. 27. No description. 
Oenothera Mennis. 
oestlundi, Pemphigus Cockerell, 1906. Ent. News, XVII, p. 34. 
A new name for P. vagabundus (Walsh) Oestlund. 
oleae, Eriosoma, Risso, 1826. Hist. Nat. Prin. I’Europe, merid. 
V, p. 218. 
Olea europea. 
olivacea, Forda Rohwer, 1908. Psyche, XV, p. 68. 
“Grass roots." 
olivata, Macrosiphum (Buckton), 1876. Mon. Brit. Aphides, I, 
p. 164, fig. Siphonophora. 
Cirsium alnceolatum. 
*onobrychidis, Aphis Goureau, 1863. Bui. Soc. Sci. Hist. Nat. 
Yonne, part 2, p. 129. 
Hedysalum onobrychis. 
onobrychis, Macrosiphum (Boyer de Ponscolombe), 1841. Ann. 
Soc. Ent. Prance, X, p. 169. Aphis. 
Onoboychis viciaefolia. 
ononidisi, Myzocallis (Kaltenbach), 1846. Ent. Zeit. (Stettin) 
VII, p. 173. Aphis. 
Medacago sativa, Melilotus alba, 'Ononis hircina, 0. spinosa, Tri¬ 
folium alexandrinum, T. pratense, T. procumbens. 
» 
ononidis, Pergandeida Schouteden, 1903. Zool. Anz., XXVI, p. 
686 . 
Ononis repens. 
ononis, Macrosiphum (Koch), 1855. Die Pflanzenlause Aphiden, 
p. 175, fig. Siphonophora. 
Ononis rotundifolia, 0. spinosa. 
