2o8 Maine; agricultural lxplrimlnt station. 1912. 



RICHARDIA. 

 R. Africana Kunth (Aethiopica). Calla Lily. 



Mysus persicae Sulzer. Gillette and Taylor, 1908, p. 35. 



Rhopalosiphum nymphaeae Linn. Davis, 1910a, p. 245. 

 R. sp. 



Rhopalosiphum dianthi Schrank. Williams, 1891, p. 8. 



LE'M'NACEAE. DUCKAVEED FMMILY. 



LEMNA. Duckweed. 

 L. gibba L. 



Rhopalosiphum nymphaeae (Linn.) Koch. Buckton, 2, p. 13. 

 L. minor L. 



Rhopalosiphum nymphaeae Linn. Williams, 1891, p. 10. 

 L. polyrrhiza Linn. 



Rhopalosiphum nymphaeae Linn. Williams, 1891, p. 10. 

 L. sp. 



Rhopalosiphum nymphaeae Linn. (Aphis aquations Jackson). Davis, 



1910a, p. 245. 



PONTEDERIACEAE. PICKEREL-WEED FAMILY. 



PONTEDERIA. Pickerel-weed. 

 P. sp. 



Rhopalosiphum nymphae Linn. Lichtenstein, Flore Supplement. 



JUNCACEAE. RUSH FAMILY. 



JUNCUS. Rush. 

 J. articulatus L. 



Atheroides hirtellus Haliday. Haliday, 1839, p. 189. 

 J. lampocarpus Ehrh. (lamprocarpus). 



Aphis glyceriae Kalt. Kaltenbach, 1874, p. 751. 

 J. sp. 



Rhopalosiphum nymphaeae Linn. Williams, 1891, p. 16. 



Sipha glyceriae (Kalt.). Patch, 1910b, p. 242. 



LUZULA. Wood Rush. 

 L. albida DC. 



Aphis luzulae Kalt. Kaltenbach, 1874, p. 726. 



LILIACEAE. LILY FAMILY. 



ALLIUM. Onion. 

 A. sp. 



Aphis aim Licht. (ined.). Lichtenstein, La Flore. 



ASPARAGUS. 



A. officinalis L. Garden Asparagus. 

 Aphis indistincta Walker. Walker, 1849c, p. 46. 



