DIPTERA. 177 



X. subfasciata Loew. 



Me.— Capens, July 14. N. H.— Bretton Woods, June 24; Glen 

 House, July 15. 



X. libo Walker (X. marginalis Williston). 



Me.— Princeton, July 12. N. H.— Mt. Washington, July 15; 

 Halfway House, July 6; Glen House, June 14; Franconia. 



X. chalybea Wiedemann. 



Me.— 9. N. H.— 13, 14. June 19-July 4. 



Mass.— 23, 24, 25, 27, 29. Conn.— 35. June 6-July 4. 



X. curvipes Loew. 



Me.— 3, 4, 8, 9. N. H.— 11. June 11-Aug. 1. 



X. vecors Osten Sacken. 



Me.— 4, 9. N. H.— 11, 14. Vt.— 17, 19. June 4-Aug. 1. 



Mass.— 27 (Brookline). June 18. 



X. bicolor Loew. 



Mass. — Concord {Barber); Melrose Highlands, June 18; Nan- 



tasket, June 17 (C. E. White, Jr.). Conn. — New Haven, 



June 9. 



X. pigra Fabricius. 



Me.— 6, 7. N. H.— 11. June 12-26. 



Mass.— 25, 26, 27. Conn.— 34. May 1-18. 



Brachypalpus Macquart. 

 B. frontosus Loew. 



Me.— 8, 9. N. H.— 11, 14. June 13-22. 

 Mass.— 25, 27, 32. Conn.—. Apr. 7-May 31. 



B. rileyi Williston. 



Mass.— Sherborn, May 1, 1919 {E. J. Smith); Newton, Apr. 30, 

 1920 (C.^. White, Jr.). 



Criorhina Meigen. 



C. intermedia Johnson, 17-153. 



N. H.^Jaffreij, June 15-18, 1917; Mt. Monadnock (summit), 



June 10, 1920; Dublin. 

 Mass.— Dartmouth, Apr. 25, 1916 (N. S. Easton). 



C. verbosa Walker. 



Me.— 9. N. H.— 11, 14, 15. Apr. 17. 



Mass.— 24, 25, 26, 27, 32. Conn.—. Mar. 13-Apr. 19. 



Cynorhina Williston {Blera Billberg). 

 C. analis (Macquart). 



Me.— 5, 8, 9. N. H.— 14, 15. Vt.— 21. June 8-20. 

 Mass.— 23, 25, 26, 27, 28, 29, 31. Conn.— 34. :\Iay 30-July 22. 



C. armillata (Osten Sacken). 



Me.— Enfield (Hitchings). N. H.— Mt. Washington (Mrs. 

 Slosson); carriage road, 2000 ft., June 17 (L. W. Swett). 



