204 Maine; agricui,turai, experiment station. 1912. 



Aphis laburni Kalt. Ferrari, 1872, p. 71. 

 Aphis medicaginis Koch. Ferrari, 1872, p. 68. 



SYNTHERISMA. 

 S. sanguinalis. See Digitaria sanguinalis (L.) Scop. 



TRIDENS. 



T. seslerioides (Lichex) Nash. 



Aphis setariae Thos. Sanborn, 1910, p. 6. 



TRIODIA. 



T. seslerioides Benth. (Tricuspis seslerioides Torr). 

 Hyalopteriis dactylidis Hayhurst. Hayhurst, 1909a, p. 107. 



TRITICUIVi. 

 T, dicoccum Schrank. 



Aphis padi Kalt. (A. avenae Fab., Kalt.). Mordwilko, 1897, p. 283. 

 T. repens L. 



Forda formicaria Heyden. Buckton, 4, p. 85. 

 T ox opt era graminum Rondani. Hunter, 1909, p. 102. 

 T. sativum Lam. Wheat. 

 Macrosiphum avenivorum Kirkaldy. (S. granaria Buckton). Kirkaldy, 



i9D5a, p. 132. 

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

 Siphonophora granaria (Kirby) (avenae Fab?) (hordei Kyber) 



(A. cerealis Kalt.) (Bramaphis Amyot). 

 Buckton, I, p. 116. 

 T. Spelta L. 



Sipha maydis Pass. Passerini, i860, p. 38. 

 Toxoptera graninum Rondani. Hunter, 1909, p. 102. 

 T, villosum P. B. 



Toxoptera graminum Rondani. Macchiati, 1883, p. 237. 

 T. vulgare Vill. 

 Aphis cerealis Kalt. Kaltenbach, 1874, p. 753. 

 Brachycolus korotnevi Mordwilko. Cholodkovsky, 1910, p. 147. 

 Macrosiphum cerealis (Kalt.). Pergande, 1904a, p. 20. 

 Macrosiphum granaria (Buckton) (avenae Thos. in part.) Pergande, 



1904a, p. 15. 

 Macrosiphum trifolii Pergande. Pergande, 1904, p. 21. 

 Schizoneura venusta Pass. Passerini, 1863, P- 69. 

 Siphocoryne avenae (Fab.) (avenae Fitch) (fali Fitch) (prunifoliae 

 Fitch) (annuae Oestl. (fitchii Sanderson) 

 (Siphonophora avenae Thos. in part). Per- 

 gande, 1904a, p. 8. 

 Siphonophora cerealis Koch (Aphis cerealis Kalt.) (A. avenae Walker 



non Schrank). Passerini, 1863, p. 12. 

 Toxoptera gramininn Rondani. Hunter, 1909, p. 102. 

 Tychea trivialis Pass. Kaltenbach, 1874, p. 753. 



