Wilso7V-Vickery—List of Aphididae, 
53 
castanea-vesca, Aphis Haldeman, 1844. Proc. Bos. Soc. Nat. Hist. 
I, p. 168. 
Castanea pumila, C. vesca. 
cathartica, Aphis Del Guercio, 1909. Rivista di Pat. Veg., IV, p.. 
5. 
Rhamnus frangula. i 
caudata, Macrosiphum (Pergande), 1900. Proc. Wash. Acad. Sci., 
II, p. 513. Nectarophora. 
Food plant unknown. 
caudata, Trama Del Guercio, 1909. Redia, V, p. 246, fig. 
Lactuca scariola. 
ceanothi, Aphis Clarke, 19 03. Can. Ent. XXXV, p. 250. 
Ceanothus cuneatus, C. integerrimus. 
ceanothi-hirsuti, Aphis Essig, 1911. Pom. Jour. Ent. 3, p. 525, fig. 
Ceanothus hirsutus. 
cecconii Dachiiiella Del Guercio, as var. of L. cilicica Del Guercio, 
which see. 
cembrae, Ch-ermes Cholodkovsky, 1888. Zool. Anz., XI, p. 47. 
Pinus cemdra. 
cembrae, liachnus Cholodkovsky, as var. of Ii. pini Linn, which see. 
centaureae. Aphis Koch, 1854. Die Pfianzenlause Aphiden, p. 63, 
fig. 
Centaurea melitensis, C. scabiosa, C, sphaerocepTvala, Crepis biennis*. 
centranthi, Macrosiphum Theobald, 1915. The Entomologist,. 
XLVIII, p. 261. 
Centranthus rubra, Valeriana offtcinalis. 
cephalanthi. Aphis Thomas, 1877. Ill. State Lab. Nat. Hist., BuL 
2, p. 11. 
Cephalanthus occidentalis. 
cephalicola, Aphis Co wen, 1895. Hemiptera of Colo., p. 118. 
Trifolium repens. 
cerasi, Aphis Muller, 1776. Zool. Dan. Prod. p. 110, fig. 
