DIPTERA. 105 



Rhagionidae (Leptidae) . 



Dialysis Walker. 

 D. elongata Say. 



Me.— 10. N. H.— 13. July 17-Aug. 3. 



Mass.— 24, 27, 29. R. I.— 33. Conn.— 35. July 18-Aug. 18. 

 The record of D. rufithorax Say, by Hood (Psyche, vol. 6, 283) 

 is probably based on the female of D. elongata. 



Rhagio Fabricius {Leptis Fabricius). 



R. gracilis Johnson, 12-3. 



Me.— 6, 8. N. H.— 11. Vt.— 20. July 10-30. 



Mass.— 23. July 24- Aug. 8. 



R. mystacea Macquart. 



Me.— 4, 6, 7, 8, 9, 10. N. H.— 11, 13, 14, 15. Vt.— 18, 21. 



May 30- July 16. 

 Mass.— 23, 24, 27, 29, 30, 32. R. I.— 33. Conn.— 35. May 



10-June 20. 



R. punctipennis Say. 



Me.— 9, 10. N. H.— 11, 14, 15. Vt.— 17, 19. June 3-July 9. 



Mass.— 23, 26, 27, 28, 29, 30, 32. R. I.— 33. Conn.— 35. 

 May 23-Aug. 8. 



R. plumbea Say. 



Vt. — Mt. Equinox, June 5. 



Mass. — Mt. Greylock, June 15; Cheshire. 



R. vertebrata Say. 



Me.— 4, 9. N. H.— 11, 12, 14. Vt.— 16, 17, 19, 20, 21. June 



23-July 20. 

 Mass.— 23. Conn.— 34, 35. June 16-Aug. 8. 



Chrysopilus Macquart. 

 C. basilaris Say. 



N. H.— 15. Vt.— 22. July 14-17. 

 Mass.— 27, 28, 29, 32. Conn.— 35. July 5-30. 



C. fasciatus Say. 



N. H.— 11, 14. Vt.— 22. July 14. 



Mass.— 23, 24, 27, 32. R. I.— 33. Conn.— 35. June 25-July 

 27. 



C. ornatus Say. 



N. H.— 11. 



Mass.— 23, 24, 25. Conn.— 34, 35. May 1-July 25. 



C. thoracicus Fabricius. 



MB.—^Hood). N. H.— Mt. Lincoln? (Hood). Both records 



are very doubtful. 

 Mass.— 23, 24. Conn.— 34, 35. June 11-July 24. 



