DIPTERA. 257 



Pallopteridae. 



Palloptera Fallen. 

 P. superba Loew. 



Me.— 8. N. H.— 11, 12. Vt.— 19, 22. June 26-Aug. 28. 

 Mass.— 23. Aug. 21. 



P. similis Johnson, 10-233 and 21-23. 



Me.— Fort Kent, Aug. 17. N. H.— Bretton Woods, June 28; 

 Mt. Washington, 2500 ft., July 24. 



P. subarcuata Johnson, 21-21. 



Mn.— Northeast Harbor, July 1 {Dr. C. S. Minot) ; Bar Harbor, 



Aug. 10. N. H. — Base Station, Aug. 15; Mt. Washington, as 



P.arcuata {Mrs. Slossoji). 



Ortalidae. 



Amphicnephes Loew. 

 A. pertusus Loew. 

 Mass.— 24, 27, 29, 32. R.I.— 33. Conn.— 35. June 10-July 23. 



Rivellia R.-Desvoidy. 

 R. conjuncta Loew. 

 Mass. — Manomet, July 27; Barnstable, July 5; Woods Hole, 



July 25. R,. I. — Wickford, June 9. Conn. — New Haven, 



June 24. 



R. brevifasciata Johnson. 



Mass. — Nantucket, Aug. 8; Tuckernuck Island, July 21 {Allen). 



R. cognata Cresson, 19-191. 

 N. H.— Cornish, July 13. 



Mass.— Tyngsboro, June 22 {Fall); Brookline, July 4. Conn. — 

 Winnipauk, June 12. 



R. metallica Van der Wulp. 



Mass. — Groton, July 8; Fall River, May 23 {Easton). Conn.— 

 New Haven, June 8 {Britton). 



R. flavimana Loew. 



Me. — Kittery, June 5. N. H. — Hanover, July 8. Vt. — St. 



Albans, June 21; Amsden, July 10; Hartland, July 22 



{Whiting). 

 Conn.— Ridgefield, July 18 {Lutz). 



R. boscii R.-Desvoidy. 



Mass.— Plymouth, July 28; Manomet, July 26; Fall River, Aug. 



17 {Easton). Conn. — Middletown, June 19; South Meriden, 



July 10 {H. L. Johnson). 



R. viridulans R.-Desvoidy. 



Me.— 6, 10. N. H.— 11, 15. Vt.— 21. June 18-22. 



Mass.— 24, 26, 27, 29, 32. R. I.— 33. Conn.— 35. June 6- 

 Aug. 23. 



