156 Wisconsin Academy of Sciences, Arts, and Letters. 
serratulae, 3Iacrosiphum Schrank, 18 01. Fauna Boica II, p. 122. 
Aphis. 
Cirsium arvense, Cnicus olermetis. 
serrulatus, Atheroides Haliday, 1839. Ann. Nat. Hist. Mag., II, p. 
189. 
Grasses. 
seselii, Aphis Lichtenstein, 1884. La Flore des Aphidens, p. 49. 
No description. 
Seseli sp. 
setariae, Aphis (Thomas) 1877. I, 11 State Lab. Nat. Hist. BuL 
2, p. 5. Siphonophora. 
Digitaria sanguinalis, EcMnochloa crus-galli, Eleusine indiea, 
MiieJilenhergia schreheri, Panicum dicliotomiflorum, P. poly- 
anthes, P. proliferum, Primus sp., Psedera quinquefolia, Setaria 
glauca, 8. viridis. 
setariae, Tychea Passerini, 18 60. Gli Afidi, p. 40. 
Coix lacJiryma-jo'bi, Digitaria liumifusa, Lactuca virosa, Oryza 
sativa, 8etaria glauca, 8. verticillata, 8. viridis, Triticum viih 
gave, Zea mays. 
setosa, Aphis Kaltenbach, 1846. Ent. Zeit. (Stettin), VII, p. 172. 
Cytisus scoparius. 
setulosa, Tychea Passerini, 1860. Gli Afidi, p. 40. 
Oryza sativa, 8etaria sp. 
shelkovnikovi, Rectinasus Mordwilko, 1916. Revue Russian Ento¬ 
mology, XV, p. ? 
From ant hill. 
shepherdiae, Capitophorus Gillette & Bragg, 1916. Ent. News, 
XXVH, p. 445, fig. 
8hepherdia argentea. 
sibiricum, Acyrthosiphon (Microlophium) Mordwilko, 1914. 
Fauna of Russia, (Insecta Hemiptera), I, Petrograd., p. 
224. 
XJrtica dioica. 
sibiricum, AcjTthosiphon (Microlophium) Mordwilko, sub sp. kir- 
giz, Mordwilko, 1914. Fauna of Russia (Insecta Hemip¬ 
tera,) I, Petrograd, p. 23 5. 
XJrtica dioica. 
