WOOLLY APHIDS OF THE ELM. 29I 



Pemphigus betae Doane. Jackson. 1908, p. 218. 



Pemphigus betae Doane. (populicaulis Fitch?). Clarke, 1903, 



p. 248. 

 Siphonophora pisi (Licht.) Williams. Williams, 1891, p. 6. 

 Smynthurodes betae Westwood. Kirkaldy, 1906, p. 9. 

 Trifidaphis radicicola Essig. Essig, 1912a, p. 699. 



CHENOPODIUM. Goosefoot. 



C. album L. Lamb's Quarters'. Pigweed. 



Aphis atriplicis L. (Uraphis-Hayhurstia atriplicis Del Guercio) 

 Hayhurst, 1909b, p. 88. Theobald, 1911-12. 



Aphis atriplicis L. (chenopodii Schfank). Passerini, 1863, p. 47. 



Aphis chenopodii Cowen. Cowen, 1895, p. 119. 



Aphis gossypii Glover (citrifolii Ashmead. In part) (citrulli 

 Ashmead) (cucumeris Forbes) (forbesi Weed?). Pergande, 

 1895, p. 313. 



Aphis maidiradicis Forbes. Vickery, 1910, p. loi, 103. 



Aphis papaveris Fab. Kaltenbach, 1874, p. 269. 



Aphis riimicis? L. (euonymi Fab.). Haj^hurst, 1909, p. 98. 



Myzus persicae Sulzer. Gillette and Taylor, 1908, p. 2>^. 



Pemphigus betae Doane. Gillette, 1909a, p. 354. 



Pemphigus lactiicarius Pass. (Amycla fuscicornis Koch). Buck- 

 ton, 3. p. 125. 

 C. anthelminthicum L. Wormseed. 



Aphis gossypii Glover (citrifolii Ashm. In part) (citrulli Ashm.) 

 (cucumeris Forbes) (forbesi Weed?). Pergande, 1895, P- 3I3- 

 C. hybridum L. Maple-leaved Goosefoot. 



Aphis atriplicis Lir.n. Williams, 1891, p. 20. Theobald, 1913. 

 Journ. Bd. Agr. Vol. 19. Feb. 



Aphis riimicis Linn. Williams, 1891, p. 20. 

 C. murale L. 



Aphis atriplicis Linn. Davidson, 1912. p. 408. 

 C. polyspermum L. 



Aphis atriplicis Linn. Davidson, 1912, p. 408. 



Aphis atriplicis Linn, (not Buckton). Theobald, 191 1 -12. 

 C. vulvaria L. 



Aphis atriplicis Linn. Theobald, 1913. 

 C. urbicum. 



Aphis atriplicis Linn. Theobald, 1913. 

 C. sp. 



Aphis atriplicis Linn. (A. chenopodii Cowen). Gillette, 191C, 

 P- 405- 



Aphis chenopodii Schrank. Lichtenstein, La Flore. 



Aphis (Amycla) fuscicornis Koch. Kaltenbach, 1874, p. 342. 



Aphis ochropus Koch. Kaltenbach, 1874, p. 505. 



Aphis rumicis Linn. Thomas, 1879, p. 88. 



