58 Maine Agricultural Experiment Station. 1918. 



Aphis bakcri Cowen (cephalicola Cowen). Gillette and Taylor, 

 1908, p. 28. 



Aphis bivincta Fitch (var. of mali). Fitch, 1855, p. 760. 



Aphis brevis Sanderson. Sanderson, 1901b, p. 157. ("Acciden- 

 tal?"). 



Aphis crataegi Kalt. (pyri Koch). Passerini, 1863, p. 35. Lustner 

 1911. 



Aphis crataegi Kaltenbach. (non Buckton). Theobald, 1916a, p. 

 171. 



Aphis dcvecta Walker. Walker, 1849c, p. 38. 



Aphis fulviventris Fitch, (var. of mali).. Fitch, 1855, p. 760. 



Aphis immaculata Fitch (var. of mali). Fitch, 1855, p. 760. 



Aphis kochi Schouteden. (pyri Koch non Boyer) (pyri-mali Fab- 

 ricius part) (mali Buckton part) (sorbi Walker part Sander- 

 son, Theobald, non Kaltenbach) (Myzus mali Ferrari part) 

 (malifoliae Fitch). Theobald, 1916a, p. 170. 



Aphis lanata Salisbury. Hagen, 1863, p. 103. 



Aphis mali Fab. (A. pyri Reaum.) Thomas, 1878, p. 11. 



Aphis mali Fab. (A. pomi DeGeer) (A. oxyacanthae Schrank). 

 Passerini, 1863, p. 40. 



Aphis mali Fab. (Puceron du pomier Gotze) (pomi DeGeer). 

 Buckton, 2, p. 46. 



Aphis mali Fab. (A. malifoliae Fitch). Oestlund, 1887, p. 64. 



Aphis malifoliae Fitch (the sorbi Kalt. of American authors). 

 Baker and Turner, 1916f, p. 11. 



Aphis medicaginis Koch. Gillette and Taylor, 1908, p. 32. 



Aphis nigra Theobald, (oxyacanthae Koch non Schrank). Theo- 

 bald, 1916a, p. 171. 



Aphis nigricollis Fitch (var. of mali). Fitch, 1855, p. 760. 



Aphis nigriventris Fitch (var. of mali). Fitch, 1855, p. 760. 



Aphis obsoleta Fitch (var. of mali). Fitch, 1855, p. 760. 



Aphis pallidicornis (var. of mali). Fitch, 1855, p. 759. 



Aphis pomi DeGeer. Gillette and Taylor, 1908, p. 23. 



Aphis pomi DeGeer. (mali Fab.) (aucupariae Buckton) (crataegi 

 Buckton \ a an der Goot, 1915, p. 213. 



Aphis pomi DeGeer (mali Fabricius) (pyri Kittel non Boyer, 

 Koch) (padi Sanderson, non Linnaeus) (oxyacanthae Schrank). 

 Theobald, 1916a, p. 170. 



Aphis pruni Reaum. (prunifoliae Fitch?) (Prunifex Amyot) (Cal- 



amaphis Amyot) Buckton, 2, p. 65. 

 Aphis pyri Boyer (sorbi Sanderson) (malifolii Fitch). Gillette 



and Taylor, 1908, p. 32. 

 Aphis pyri Boyer (crataegi Kalt.) (A. discrepans Koch). Koch, 



p. 109. 

 Aphis pyri Hartig. Hartig, 1841, p. 369. 

 Aphis rumicis Linnaeus (papaveris Fabricius) (thlaspeos Schrank) 



(fabae Scopoli) (atriplicis Fabricius) (aparines Schrank) (ar- 



