152 Wisconsin Acadxmy of Sciences^ ArtSy and Letters, 
salicellis, Lachnus? Fitch, 1851. Kept. Reg. Univ. State N. Y. 
Cab. Nat. Hist, p., 67. 
Salix sp. 
sallceti, Aphis Kaltenbach, 1843. Mon. der Pflanzenlause, p. 103. 
Salix aurita, S. hahylonica, 8, caprea, 8. cinerea, 8. fragilis, 8. pur¬ 
purea, 8, viminalis. 
salicicola, Aphis (Thomas), 1877. Ill. State Lab. Nat. Hist., BuL 
2, p. 8. Siphonophora. 
8aUx amygdaloides, 8. discolor. 
salicicola, Chaltophorus Essig, 1911. Pom, Coll. Jour. Ent. 3,. p. 
532, fig. 
Populus trichocarpa, Salix laevigata. 
salicicola, Lachims Uhler, 1862. Flint Ed. Harris Ins. Ing. to 
Veg., p. 239. 
New name for Aphis saMcti Harris. 
salicicorticis, Symdobins Essig, 1912. Pom. Coll. Jour. Ent. 4, p. 
731, fig. 
8alix laevigata. 
salicina, Aphis Zetterstedt, 1840. Ins. Lapp. I, p. 311. 
8alix sp. f 
saliciradicis, Fullawaya Essig, 1912. Pom. Coll. Jour. Ent. 4, p. 
737, fig. 
8alix laevigata. 
^salicis, Aphis Muller, 1776. Zool. Dan. Prod., p. 110. 
8alix sp. 
salicis, Aphis Sulzer, 1776. Abgek, Gesch. Ins., p. 105, fig. 
8alix sp. 
salicis, Chaitophorus Williams, 1891. Special Bui. No. 1, Univ. 
Nebraska, Dept, of Ent., p. 27. No description. 
Salix sp. 
salicis, Pterocomma (Linnaeus), 1758. Edition 10, Systema Na¬ 
turae, p, 453. Aphis. 
Populus candicans, Salix alha, 8. caprea, 8. cinerea, 8. fragilis, 8. 
longifoUa, 8. lucida, 8. pentandra, 8. triandra, 8. viminalis. 
