Wilson-Vickery~List of Aphididae. 
59 
coccus, Pemphigus Buckton, 1889. Trans. Linn. Soc., London, 
(2), V, p. 142, fig. 
Pistacia vera. 
coffeae, Aphis Nietner, 1880. The Coffee Tree and Its Enemies, 
p. 12. 
Coffea araHca. 
collega, Aphis Walker, 1848. The Zool. VI, p. 2218. 
Artemisia maritima. 
coloradensis, Chermes, Gillette, 1907. Proc. Acad. Nat. Sci. Phil., 
p. 16, fig. 
Pinus contorta, P. eduUs, P. ponderosa, P. scopulorum. 
coluteae, Pemphigus Passerini, 1863. Aphididae Italicae, p. 75. 
Coliitea arhorescens. 
comes, Aphis Walker, 1848. Ann. Mag. Nat. Hist., ser. 2, I, p. 
258. 
Betula alha. 
commoda. Aphis Walker, 1848. The Zool. VI, p. 2219. 
Artemisia maritima. 
compositae, Aphis Theobald, 1915. Bui. Ent. Research, VI, p. 
123, fig. 
^'Compositae, species unknown. 
compositae, Macrosiphum Theobald, 1915. Bui. Ent. Research VI, 
p. 106, fig. 
Compositae sp., african plant called "MocatJia.'’ 
compressa, Colopha Koch, 1857. Die Pfianzenlause Aphiden, p. 
267, fig. Schizoneura. 
TJlmus americanus, U. campestris, U. "effiisa.” 
confinis, Lachnus Koch, 1857. Die Pfianzenlause Aphiden, p. 245, 
fig. 
Juniperus communis. 
confusa. Aphis Walker, 1849. The Zool. VII, p. 46, app. 
ScaMosa arvensis. 
conica, Phylloxera (Shimer), 1869. Trans. Am. Ent. Soc., II, p. 
390. Dactylosphaera. 
Carya aWa, C. cordiformis. 
