DIPTERA. 31 



T. calcar (Osten Sacken). 



Me.— 1, 4, 6, 7, 8, 9. N. H.— 11, 14, 15. Vt.— 17, 21. May 



20-Sept. 13. 

 Mass.— 23, 24, 25, 26, 27, 28. May 26-Oct. 1. 



T. hyperborea (Osten Sacken). 



N. H. — Camp of Cambridge Entomological Club, near the ,Half- 

 way House, Mt. Washington, July 21, 1875 (Dimmock). 



T. inconstans (Osten Sacken). 



Me.— 1, 4, 6, 7, 8. N. H.— 11, 14, 15. Vt.— 17, 20, 21. May 



26-Aug. 29. 

 Mass.— 23, 26, 27, 28. R. I.— 33. Conn.— 35. June 2-Aug. 



10. 



T. katahdin Alexander, 14-598. 



Me. — Mt. Katahdin, Aug. 22 (Alexander); Ellsworth, Aug. 26, 

 Sept. 1 {Stanwood) . 



T. macateei Alexander, 19-166. 



Mass. — Sharon, Maj'- 26; Blue Hill, June 6; North Amherst, 

 Whately Glen and Sunderland, May 5-30 {Alexander). 



T. vernalis (Osten Sacken). 



Me.— 7, 8, 9. N. H.— 11. June 10-July 25. 



Mass.— 23, 24, 27. May 26-June 18. 



Dicranota Zetterstedt. 



D. eucera Osten Sacken. 



Mass. — Amherst, Apr. 30-May 3, 1924 {Alexander). 



D. iowa Alexander, 20-78 (Z>. novehoracensis Johnson, 22-22, 



not Alexander, 14-600) . 

 N. H.— Mt. Washington, 4000 to 5000 ft., July 8-21. 



D. pallida Alexander, 14-599. 

 N. H.— White Mts. {Morrison). 



D. rivularis Osten Sacken. 



Mass. — Whately Glen, May 6 {Alexander). 



Rhaphidolabis Osten Sacken. 



R. cayuga Alexander, 16-543. 



Me. — . 



Mass. — Amherst, May 3-14 {Alexander). 



R. confusa Alexander, 24-63. 



Mass.— Mt. Toby, May 20 {Alexander). 



R. flaveola Osten Sacken. 



Me.— 1, 3, 6, 8. N. H.— 11, 14. Vt.— 20. June 10-Aug. 19. 



Mass.— 23, 24. June 5. 



R. modesta (Osten Sacken). 

 N. H.— White Mts. 



