DIPTERA. 173 



E. brousi Williston (E. meigenii of authors, not Wiedemann). 

 Me.— 7, 10. N. H.— 11, 14. Vt.— 20. June-July 25. 

 Mass.— 27, 28, 30, 32. May 22-Aug. 21. 



E. compactus Walker. 



Me.— 6, 8. N. H.— 11, 14, 15. Vt.— 19. May 20-Aug. 8. 



Mass.— 25. Conn.— 34. June 29. 



E. dimidiatus Wiedemann. 



Me.— 3, 4, 6, 8, 9, 10. N. H.— 11, 14, 15. Vt.— 19. June 12- 



Sept. 25. 

 Mass.— 23, 27, 28. R. I.— 33. Conn.— 34, 35. Apr. 25- 



Oct. 4. 



E. saxorum Wiedemann. 

 Me.— 4, 8. N. H.— 13, 14. June-July 11. 

 Mass.— 24, 25, 26, 27, 31, 32. R. I.— 33. Conn.— 34, 35. 

 May24-Aug. 16. 



E. transversus Wiedemann. 



Me.— 4, 6, 8, 9, 10. N. H.— 11, 13, 14, 15. Vt.— 16, 17, 19, 21. 



June 8-Sept. 28. 

 Mass.— 23, 24, 25, 26, 27, 28, 29, 32. R. I.— 33. Conn.— 34, 



35. June 27-Oct. 20. 



E. bastardi Macquart. 



Me.— 1, 4, 6, 8, 9, 10. N. H.— 11, 13, 14, 15. Vt.— 19, 20. 



June 12-Sept. 22. 

 Mass.— 23, 24, 25, 26, 27, 28, 29, 31, 32. Conn.— 34, 35. Apr. 



15-Sept. 20. 



E. flavipes Walker. 



Me.— 2, 4, 8, 9. N. H.— 11, 14, 15. Vt.— 19, 20. June 18- 



Sept. 22. 

 Mass.— 26, 27, 29, 31. R. I.— 33. Conn.— 34, 35. May 4- 



Aug. 25. 



E. aeneus (Scopoli). 

 N. H.— 15. Aug. 14-26. 



Mass.— 27, 28, 29, 31, 32. R. I.— 33. Conn.— 35. June 23- 

 Oct. 19. 



Tropidia Meigen. 

 T. calcarata Williston. 

 Mass. — Arnold Arboretum, Forest Hills, Boston, June 14, 1912 



{Reif). 



T. quadrata Say. 



Me.— 1, 6, 7, 8, 9, 10. N. H.— 11, 14, 15. Vt.— 20, 21. June 



28- Aug. 12. 

 Mass.— 25, 26, 27, 28, 29, 30, 32. Conn.— 34, 35. May 30- 



Sept. 1. 



