268 FAUNA OF NEW ENGLAND. 



L. cylindrica var. pleuritica Loew. 



Me.— 7, 8. N. H.— 11, 12, 14, 15. Vt.— 20. June 20-Aug. 8. 



Mass.— 23, 26, 27, 28. Conn.— 35. June 1-Aug. 9. 



L. cylindrica var. pectoralis Loew. 



N. H.— White Mts. Vt.— Mt. Ascutney, July 11. 



Mass. — Auburndale, May 29. Conn. — . 



L. cylindrica var. obsoleta Johnson, 20-15. 

 Vt. — Burhngton, June 22; Winooski, Aug. 2. 

 Mass. — Plymouth, July 28. 11. I. — Buttonwoods, June 22. 

 Conn. — Cornwall, June 23 {Chamberlain). 



L. collaris Loew. 



Me.— Liberty, Sept. 11, 1913 (Ciishman). N. H.— Hampton, 



July 14 {Shaiv). 

 Mass.— Medford, Aug. 26 {G. W. Barber); Salem, June 28 



(Morse) . 



Pseudopsila Johnson, 20-17. 



P. angustata (Cresson), 19-193. 



Vt. — Woodstock, Aug. 20 {A. P. Morse). 



P. fallax (Loew). 



Me.— 8. N. H.— 11, 15. July 23-Sept. 3. 



Mass.— 25, 27, 28, 32. Aug. 16-Sept. 13. 



P. bivittata (Loew). 



Me.— 6, 9. N. H.— 15. Vt.— 16. June 14-25. 



Mass.— 23, 26, 27. R. L— 33. Conn.— 35. May 28-June 28. 



P. collaris (Loew). 



Me.— 6, 8. N. H.— 11, 12, 15. Vt.— 16, 21. June 10- July 10. 



Mass.— 23, 26, 27, 29. Conn.— 35. May 27-July 4. 



P. perpolita Johnson, 20-18. 



Me.— Liberty, Sept. 9, 1913 (Cushman). N. H.— Center Har- 

 bor, Sept. 10, 1914. 



Psila Meigen. 

 P. bicolor Meigen. 

 Me.— 7, 8. N. H.— 11. Vt.— 19, 20. July 8-21. 



P. bicolor var. dimidiata Loew. 

 Me.— Capens, July 14, 1907. 



P. frontalis Coquillett. 



Me.— 6. N. H.— 11. Vt.— 12, 20, 22. July 7-23. 



Mass.— 23, 24. July 14-Aug. 5. 



P. lateralis Loew. 



Mass. — Auburndale, June 4-July 12 ; Ipswich, June 10. Conn. — 

 Winnipauk, June 12. 



P. levis Loew. 



Me.— Mt. Desert, June 15-Julv 24; Ft. Kent, Aug. 17. N. H.— 

 Mt. Washington, 3000 ft., July 28; Jaffrey, June 8. 



