DIPTEllA. 233 



P. slossonae Malloch, 20-127. 



N. H.— Mt. Washington, 2500 ft., June 14. 1916. 



P. triseta Malloch, 20-177. 



Mass.— 23, 27, 28, 29. R. I.— 33. May 22-Sept. 21. 



P. unicolor Stein. 



Vt. — St. Albans, June 21; Mt. Ascutney, July 11. 



Mass. — Chester, Aug. 3; Great Barrington, June 14. 



P. vittigera Zetterstedt. 



Me.— 7, 8, 10. N. H.— 13, 15. Vt.— 18. June 21-Sept. 10. 



Mass.— 23, 25, 27. Aug. 8-23. 



P. winthemi Meigen (P. lotitarsis Zetterstedt). 

 Me.— 8. N. H.— 11, 14, 15. June 7-Sept. 8. 

 Mass.— 27, 31, 32. Aug. 2-4. 



Eremomyoides Malloch, 21-76. 



E. cylindrica (Stein). 



Me.— 6. N. H.— 15. Apr. 15-May 13. 



Mass.— 24, 26, 27, 28, 32. Apr. 3-June 1. 



Acroptena Pokorny. 

 A. ambigua (Fallen). 



Me.— 3, 7, 8, 9. Vt.— 20. June 13-Aug. 5. 

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

 Aug. 27. 



Hydrophoria R.-Desvoidy. 



H. arctica Malloch, 19-690. 



N. H.— Mt. Washington, "Alpine Garden," 5000 ft., Aug. 16, 

 1916. 



H. proxima Malloch, 20-171. 



Me. — Machias, July 21; Princeton, July 12; Bar Harbor, June 13. 



H. uniformis Malloch, 18-297. 



Conn.— Yalesville, Oct; 19, 1903 (Viereck). 



Eustalomyia Kowarz. 



E. vittipes Zetterstedt. 



Me.— 4. N. H.— 12, 14, 15. June 18-Julv 21. 



Mass.— 23, 27, 28, 29. Conn.— 35. May 6-Sept. 18. 



E. brixia Walker {E. histrio Zetterstedt?). 



Me.— Northeast Harbor, July 16, 1909 {Dr. C. S. Minot). N. H.— 



Glen House, June 14, 1916. 

 Mass.— Southbridge {Bromley); Great Barrington, June 16; 



Medford and Blue Hill, July 3-16. 



Proboscimyia Bigot {Dolichoglossa Stein). 



P. siphonina Bigot. 



Mass. — Nantucket, Sept. 8. 



