DIPTERA. 115 



Mass.— 23, 24, 25, 26, 27. R. I.— 33. Conn.— 35. Mav 24- 

 June 23. 



C. laphriformis Curran, 23-59. 



N. H.— Intervale, June 26, 1909 {S. A. Shaw). 



C. lutatius Walker. 



Me.— 4, 8, 9. N. H.— 11, 13, 15. June 29-Aug. 7. 



Mass.— 27, 29. June 12-July 3. 



C. lyratus Osten Sacken, 



Me.— Oquossoc, July 1. N. H.— White Mts. (Osten Sacken); 



Mt. Washington, summit (Mrs. Slosson); near Glen House, 



2500 ft., July 16. Vt.— Rutland, Aug. 1. 



C. marginalis Loew. 

 N. H.— 14. June 22. 



Mass.— 24, 26, 27, 32. R. I.— 33. Conn.— 35. May 14-June 

 15. 



C. tenuis Bromley, 24-125. 



Me. — Southwest Harbor, July 20, 1923. 



Lasiopogon Loew. 

 L. opaculus Loew. 

 Me.— 9. N. H.— 11. June 16. 

 Mass.— 23, 24, 27. Conn.— 35. May 12-June 11. 



L. tetragrammus Loew. 



N. H.— Franconia (Mrs. Slosson); Intervale, June 16 (Alleii); 



Bretton Woods, June 28. 

 Mass. — -Sunderland, June 6 (Bromley). Conn. — Poquonock, 



May 22 (Walden). 



L. terricola Johnson. 



Mass.— Natick, May 15 (Frost) ; Chieopee, May 24, 1896 (Knab) ; 

 Amherst, June 8 (Bromley). Conn. — Poquonock, Mav 22 



(Walden). 



Holcocephala Jaennicke. 

 H. abdominalis (Say). 

 N. H.— 11. Vt.— 17, 20. July 21-Aug. 6. 

 Mass.— 23, 24. Conn.— 35. July 14-Aug. 8. 



Holopogon Loew. 



H. guttula Wiedemann (H. philadelphicus Schiner). 

 Mass.— 23, 24, 25, 27, 28. Conn.— 35. May 30-Aug. 6. 



H. tibialis Curran, 23-207. 



Mass.— 23, 24, 27. Conn.— 35. June 14-July 14. 



Neopogon Bezzi {Slichopogon of authors, not Loew). 

 N. argenteus (Say), 



Mass.— Sand dunes. Horse Neck Beach, Aug. 3-9, 1896 (Dr. 

 Hough), July 30, 1913 (C. W. J.). 



