DIPTERA. 161 



Chrysogaster Meigen. 

 C. nigripes Loew. 

 Me.— 6, 7, 8. N. H.— 11, 14, 15. Vt.— 16, 21. .June 5- 



July 21. 

 Mass.— 23, 25, 26, 27, 29. R. I.— 33. Conn.— 34, 35. Apr. 



29-Jiily 4. 



C. nitida Wiedemann. 



Mass.— Fall River, July 26 (Easton); Woods Hole, July 24, 



1905; Nantucket, Aug. 8. R. I. — Button woods, July 24. 



Conn. — Winnipauk, Aug. 4. 



C. pictipennis Loew. 

 Vt.— 6. June 24. 



Mass.— 23, 27, 29, 31, 32. R. I.— 33. Conn.— 35. May 4- 

 Aug. 5. 



C. pulchella Williston. 



Me.— 1, 8, 9. N. H.— 11, 14, 15. Vt.— 17, 21. June 12- 



Aug. 19. 

 Mass.— 23, 24, 25, 27, 28, 32. R. I.— 33. Conn.— 34, 35. 



May 24- Aug. 11. 



Pipiza Fallen. 

 P. femoralis Loew. 



Me.— 9. N. H.— 11, 14, 15. Vt.— 21. May 17-June 18. 

 Mass.— 23, 24. Conn.— 35. May 7- June 14. 



P. femoralis var. albipilosa WiUiston. 



Me.— 9. N. H.— 14. June 1-Aug. 8. 



Mass.— 23, 25, 27. Conn.— 34. May 26- July 25. 



P. quadrimaculata (Panzer). 



Me.— 8. N. H.— 11, 14. June 10-July 14. 



Mass.— 23 (Mt. Greylock), June 15, 1906. 



P. nigropilosa Williston. 



Me.— 8. N. H.— 11, 14. June 17- Aug. 1. 



Mass.— 23, 25. CoxNN.— 35. May 14-June 14. 



P. nigrotibiata Curran, 24-81. 



N. YL.—Jaffrey, June 17, 1917; Alstead, Aug. 8, 1914 (A. P. 



Morse) . 

 Mass. — Chester, Aug. 6, 1914. 



P. puella Williston. 



N. B..— White Mts., Aug. 1 (Williston). 



Pipizella Rondani. 



P. apisaon (Walker) (Pipiza modesta Loew, 9 ; P. nigribarbis 

 Loew, d^ ; and P. pulchella Williston; see Curran, 24-342). 



Me.— 6, 10. N. H.— 11, 15. Vt.— 18. June 27-Julv 24. 



Mass.— 23, 27, 29, 30, 32. R. I.— 33. Conn.— 35. June 20- 

 Oct. 19. 



