DIPTERA. 157 



Microsania Zetterstedt. 



M. stigmaticalis Zetterstedt (see Melander, 22-46) {Platy ene- 

 ma imperfecta Loew) . 



Me.— Mt. Desert, July 31 {W. A. McAtee); Mt. Katahdin, 

 July 31 (Blake). N. H. — Franconia (Mrs. Slosson). 



Mass. — Boston, Apr. 23-Aug. 13, on windows; Manomet, July 

 17 (Cushman). 



PiPUNCULIDAE. 



Chalarus Walker. 

 C. spurius (Fallen). 



Me.— 7, 8. N. H.— 12. Vt.— 20. June 14-Aug. 16. 

 Mass.— 23, 26, 27. Conn.— 25. June 1-Sept. 24. 



Verrallia Mik. 

 V. pilosa Zetterstedt. 



Me.— 8. N. H.— 11, 14, 15. Vt.— 21. June 5-July 12. 

 Mass.— 23, 24, 27. May 24-July 10. 



Nephrocerus Zetterstedt. 

 N. daeckei Johnson. 

 N. H. — Franconia (Mrs. Slosson). 



N. slossonae Johnson, 15-55. 



N. H. — Mt. Washington (Mrs. Slosson); Base Station, July 4 



(C. A. Frost); Bretton Woods, June 25-28; Mt. Monadnock, 



June 20. 



Pipunculus LatreiUe. 



P. affinis Cresson, 11-283. 



Vt. — Burlington, June; St. Johnshury, June. 



Mass. — Barnstable, July. 



P. dubius Cresson, 11-284. 



Me.— 4, 7, 8. Vt.— 16. June 24-July 25. 



R. I.— 33. July 21-Aug. 2. 



P. nigripes Loew. 



N. H.— 11, 15. July 1. 



Mass.— 23, 25, 27, 32. June 27- July 30. 



P. semifasciatus Cresson, 11-288. 



N. H. — Hanover, July 4; Hampton, June 15. 



Mass.— Mt. Tom, July 14; Sharon, July 7. 



P. aequus Cresson, 11-292. 



N. H. — Hampton, July 25. Vt. — Manchester, June 8. 



M.ASS.—Hyannisport, July 4; Auburndale, June 17; North 

 Adams, June 20. 



P. minor Cresson, 11-293. 



Me.— 1, 2, 4, 8. N. H.— 11, 14. June 27-Aug. 16. 



Mass.— 27, 32. Conn.— 35. June 12-Aug. 6. 



