Wilson-Yichery—List of Aphididae. 
61 
convolvulicola, Aphis Ferrari, 1872. Ann. Mus. Civ. Stor. Nat. 
Genova, II, p. 66. 
Convolvulus altheoides, C. arvensis. 
cookii, Aphis Essig, 1911. Pom. Coll. Jour. Ent. 3, p. 587, fig. 
Citrus sp. 
cooleyi, Chermes Gillette, 1907. Proc. Acad. Nat. Sci. Phil., p. 3, 
fig. 
Picea englemanni, P. pungens, Pseudotsuga douglassi. 
cooleyi Chermes Gillette, var. coweni, Gillette, 19 07. Proc. Acad. 
Nat. Sci. Phil., p. 10, fig. 
Picea englemanni, Pseudotsuga douglassi. 
coracinus, Chaitophorus Koch, 1854. Die Pflanzenlause Aphiden, 
p. 2, fig. 
Acer campestre, A. platinoides, A. pseudo-platanus. 
cora/llorhizae, Macrosiphum (Cockerell), 1903. Can. Ent., XXXV, 
p. 167. Nectarophora. 
CorallorMza multiflora. 
cordatae, Chaitophorus Williams, 1911. Aphididae of Nebraska, 
p. 26. 
Salix cordata. 
coreopsidis, Macrosiphum (Thomas), 1877. Ill. State Lab. Nat. 
Hist. Bui. 2, p. 7. Siphonophora. 
Bidens aristosa, B. Mpinnata, B. frondosa, B. vulgata. 
coriandri, Brevicoryne (Das) Van Der Goot, 1915. Beitr Kenntn. 
Holland. Blat. Harrlem, p. 245. 
No description. 
comi, Anoecia (Pabricius), 1775. Systema Entomologiae, p. 736. 
Aphis. 
Andropogon furcatus, Bromus Tiordeaceous, B. sterilis, B. unio- 
loides, Capsella hursa-pastoris, Cornus amomum, C. asperi- 
folia, C. paniculata, C. sanguinea, C. stolanifera, Digitaria 
humifusus, D. sanguinalis, EcMnocTiloa crus-galli, Eragrostis 
major, E. megastacTiya, E. pectinacea, Festuea ovina-durius- 
cula, Grindelia squarrosa, Holcus lanatus, Hordeum judatum, 
Muhlendergia racemosa, Panicum capillare, P. dicJiotomiflorum, 
P. proUferum, Phleum pratense, Polygonum aviculare, P. 
pennsylvanica, P. persicaria, Prunus domestica, Setaria glauca, 
S. italica, S. viridis, Sorghum vulgare, Spartina cynosuroides, 
Triticum vulgare, Zea Mays. 
