DIPTERA. 263 



N. albipennis (Loew). 



Mass. — Westport Factory, July 31; Swansea, Aug. 19 {Easlon). 



Conn. — New Haven, Aug. 15 {B. H. Walden). 



The larvae live in the flower buds of Ironweed. 



N. achilleae Johnson. 



Mass. — Manomet, July 27; Edgartown, Aug. 22; Tisbury, July 



31 {Cushman); Waquoit, Sept. 21 {Bnjant). 



Frequenting the flowers of Yarrow or Milfoil {Achillea mille- 

 folium) . 



Xanthomyia Pliillips, 23-140. 



X. platyptera (Loew). 

 Vt. — Woodstock {A. P. Morse). 



Conn. — Kent, Aug. 31 (A. P. Morse); South Meriden, June 8 

 {H. L. Johnson); East Hartford, Aug. 9 (P. L. Buirick). 



Eutreta Loew. 

 E. sparsa (Wiedemann). 

 Me.— 3, 6, 7, 8, 9, 10. N. H.— 11, 12, 13, 14, 15. Vt.— 17, 20, 



22. July 7-Sept. 6. 

 Mass.— 23, 24, 27, 32. R. I.— 33. Conn.— 34, 35. July 6- 



Sept. 22. 



The larvae form root galls on Goldenrod. 



Eurosta Loew. 

 E. solidaginis (Fitch). 



Me.— 6, 7, 8, 9. N. H.— 11, 12, 13, 14, 15. June 9-28. 

 Mass.— 23, 24, 25, 27, 32. R. I.— 33. Coxx.— 35. May 4- 



June 5. 



The larvae form round galls on the stalks of Goldenrod. 



E. reticulata Snow. 

 N. H.— 11, 15. June 1. 



Mass.— 23, 24, 25, 27, 32. R. I.— 33. Coxx.- 35. :May 18- 

 Aug. 27. 



E. conspurcata Doane. 



N. H.— Hampton, IMay 30 {Shaw). 



Mass. — Springfield {Dimmock) . 



E. latifrons Loew. 



Me.— 6, 8. N. H.— 11, 12. Vt.— 16, 20. June 20-Sept. 1. 



Mass.— 24, 27, 28. Coxx.— 24, 25. Aug. 21-Sept. 5. 



E. comma (Wiedemann), 



Me.— 8, 9. N. H.— 11, 13, 14. Aug. 25-Sept. 7. 



Mass.— 25, 27. Coxx.— 34, 35. Aug. 30-Sept. 28. 



The larvae form root galls on Goldenrod, Solidago juncca. 



