64 Wisconsin Academy of Sciences, Arts, and Letters. 
*crassirostris, Phylloxera Dahl, 1912. Beitr. Naturdenkmalpfl, 
III, p. 435. 
Food plant? 
crataegaria, Macrosiphum (Walker) 1850. Ann. Mag. Nat. Hist. 
(2), VI, p. 46. Aphis. 
Crataegus oxyacantha. 
crataegeUa, Aphis Theobald, 1912. List of Aphididae of the Hast¬ 
ings District, p. 9. 
A new name for Aphis crataegi Buckton not Kaltenbach. 
•crataegi, Aphis Kaltenbach, 1843. Mon. der Pflanzenlaiise, p. 66. 
Crataegus oxyacantha, Pprus communis, P. malus, Ranunculus sp. 
crataegi, Aphis Koch, 1854. Die Pflanzenlause Aphiden, p. 64, fig. 
Crataegus oxyacantha. 
crataegi, Eriosoma (Oestlund) 1887. Aphididae of Minnesota, p. 
27. Schizoneura. 
Crataegus punctata, C. tomentosa. 
crataegi, 3Iacrosiphiiiii (Monell), 1879. Bui. U. S. Geol. & Geog. 
Surv. Terr. V, p. 20. Siphonophora. 
Crataegus coccinea, C. oxyacantha, C. punctata. 
crataegi, ProciphUus Tullgren, 1909. Ark. Zool. V. No. 14, p. 96, 
fig. 
Crataegus oxyacantha, Pyrus malus. 
crataegifoliae, Aphis Fitch, 1851. Kept. Reg. Univ. State N. Y. 
Cab. Nat. Hist., p. 66. 
Crataegus coccinea, C. punctata. 
crataegus-coccinea. Aphis Rafinesque, 1818. Amer. Mon. Mag. & 
Critic. Rev., Ill, p. 16. 
Crataegus coccinea. 
creelii, Macrosiphum Davis, 1914. Canadian Entomologist, XLVI, 
p. 41, fig. 
Medicago sp. 
crithmi. Aphis Buckton, 1886. Trans. Ent. Soc. London, p. 323, 
fig. 
Crithmum maritimum. 
