DIPTERA. 221 



P. serva (Meigen), 



Me.— 4, 7, 8, 10. N. H.— 11, 14, 15. Vt.— 17, 19, 21. June 4- 



Sept. 11. 

 Mass.— 23, 27. June 13-26. 



P. fraterna Malloch, 23-251. 



Mass. — Lunenburg, May 19, 1916 (S. M. Dohanian). 



P. tipulivora Malloch, 23-252. 



N. H.— Halfway House, Mt. Washington, July 6, 1914. 

 Mass. — Winchendon; Lunenburg; Raynham; Melrose Highlands. 

 Apr. 29-May21. 



P. pallidula Coquillett. 



jNIass. — Barnstable, July 5, 1904. 



P. rufibasis Malloch, 19-207. 



Me. — ^Ashland Junction, Aug. 16; Mt. Desert, Aug. 6. N. H. — 



Hanover, July 6. 

 Mass. — Chester, Aug. 3, 1911; Great Barrington, June 15. 



P. cayugae Johannsen, 17-327 {P. nigricans Johannsen, 16-395, 



not Stein, 1897). 

 ]\Ie.— 8, 10. N. H.— 15. Vt.— 16. May 15-Sept. 11. 

 Mass.— 23, 25, 26, 27. Conn.— 35. May 7-Sept. 1. 



P. errans Meigen. 



Me.— 4, 7. N. H.— 11. Vt.— 19, 21. June 5-Aug. 1. 



Mass.— 23, 27. Conn.— 35. July 16-Sept. 19. 



P. errans var. completa Malloch, 23-258. 



Me. — Mt. Desert, June 26 and Sept. 10. N. H. — Base Station 



and Mt. Washington, July 3 to Aug. 15. 

 Mass. — Sharon, Aug. 3. 



P. deleta (Stein). 



N. H.— 11. Vt.— 21. June 24-July 28. 



Mass.— 23, 27. CoxNN.— 35. June 8-Aug. 23. 



P. soccata Walker. 



Vt. — Manchester, June 9, 1910. 



Mass.— Chester, May 26, 1912. 



P. morrisoni Malloch, 23-264. 



N. H.— 11. Vt.— 19, 29, 21, 22. June 5-Aug. 23. 



Mass.— Petersham, Aug. 25, 1920 (L. H. Taylor). 



P. harti Malloch, 23-266. 

 Mass.— Auburndale, May 26. 



P. brevispina IVIalloch, 23-269. 



N. H. — Glen House, June 11, and summit of Mt. Washington, 

 June 30, 1913. 



P. flavibasis INIalloch, 19-208. 

 Mass. — Chester, May 28. 



