DIPTERA. 275 



Cirrula Cresson, 15-70. 



C. gigantea Cresson, 15-71. 



Me.— 7, 8, 9. N. H.— 15. Apr. 22-Sept. 22. 



Mass.— 26, 27, 28, 29, 31. Conn.— 35. June 21-Oct. 13. 



Coenia R.-Desvoidy. 



C. bisetosa Coquillett. 



N. H.— Hampton, Jan. 2, 1906 (Shaiv). 



Mass.— Eastham, June 27, 1904. 



C. palustris (Fallen). 



N. H.— Hampton, March 28 and April 30, 1910 (Shaw). 



Dimecoenia Cresson, 16-152. 



D. spinosa (Loew). 



Me.— 8. N. H.— 15. July 27-Sept. 12. 



Mass.— 26, 27, 28, 29, 32. R. I.— 33. Conn.— 35. June 27- 

 Sept. 8. 



Scatella R.-Desvoidy. 



S. callosicosta Bezzi. 



Mass.— Tuckernuck, July 21, 1910 (G. M. Alleii); Martha's 

 Vineyard, June 13, 1917. 



S. dichaeta Loew. 



N. H.— Hampton, Jan. 2, 1916 (Shaw). 



Mass.— Eastham, June 27; Nantucket, July 20, 1910 (G. M. 

 Allen); Muskeget, July 14 (Brooks); Gloucester, June 20. 



S. flavillacea Loew. 



Mass.— Chester, Aug. 7, 1912. 



S. lugens Loew. 



Me.— 3, 8. N. H.— 15. July 16-Aug. 18. 

 Mass.— 26, 27, 28, 29, 30. R. I.— 33. Conn.— 35. May 26- 

 Oct. 1. 



S. obsoleta Loew. 



Mass. — Eastham, Chatham and Hyannisport, June 27-July 4; 



Nantucket, July 20 (G. M. Allen). 

 R. L — Buttonwoods, June 17. 



S. stagnalis (Fallen). 



Me.— 7. N. H.— 11, 15. May 4-July 17. 



Mass.— 27, 28, 29. Conn.— 35. May 15-Oct. 31. 



S. stenhammeri Zetterstedt. 



Me.— Mt. Katahdin, 5000 ft., Aug. 2, 1913 (Alexander); Mt. 



Desert, June 17-July 11. 

 Mass.— Brookline, June 11, 1905; Sherborn, Oct. 14, 1922 (C. A. 



Frost) . 



