DIPTERA. 33 



O. dorsalis Johnson, 09-119. 



Me. — Capens, July 14; Machias, July 25; Mt. Desert, June 11- 

 July 17. 



O. venosa Johnson, 09-120. 



Me.— 4, 7. N. H.— 11, 12, 14. Vt.— 18. June 27-July 15. 



Mass.— 23, 24, 25, 27. May 29- June 18. 



O. obscura Johnson, 09-122. 



Me.— 4, 7, 8, 10. N. H.— 11, 12, 13. Vt.— 17, 22. June 19- 



Aug. 8. 

 Mass.— 23, 27. R. I.— 33. June 18-Aug. 10. 



O. obscura var. polita Johnson, 09-122. 

 N. H.— 11, 12. July 5-20. 

 Mass.— 23, 25, 27. June 28-Aug. 8. 



Tanyptera Latreille {Xiphura BruUe). 



T. frontalis (Osten Sacken). 



N. H.— 11, 14. June 9-July 4. 



Mass.— 23, 25, 27. Conn.— 35. May 9-June 15. 



T. topazina (Osten Sacken). 



Me.— 6, 8. N. H.— 11, 14. Vt.— 21. June 5-24. 



Mass.— 23. June 8-14. 



T. fumipennis (Osten Sacken). 



N. H. — Hampton (Shaw). 



Mass.— "The Notch," South Amherst, May 27. Conn.— 



Hamden, May 25 (C/iampZam) ; South Meriden, May 28 {H. L, 



Johnson). 



Ctenophora Meigen. 



C. apicata Osten Sacken. 



ME.--4, 6, 9, 10. N. H.— 11, 15. June 28-July 30. 



Mass.— 24, 27, 32. R. I.— 33. Conn.— 35. July 12-Aug. 22. 



C. nubecula (Osten Sacken). 



Mass. — Wellesley; Dorchester, June. Conn. — Rowayton, June 

 16. 



Stygeropis Loew. 

 S. fuscipennis Loew. 



Me.— 8. Vt.— 16, 20. June 24-Aug. 18. 

 Mass.— 26, 27, 29, 30. R. I.— 33. June 21-Aug. 23. 



Longurio Loew. 

 L. testaceus Loew. 

 Me.— Boothbay Harbor, Julv 26, 1924 (G. M. Allen). N. H.— 



White Mts. (Morrison), U. S. Nat. Mus. 

 Mass.— Savoy, July 17, 1919 (Dr. W. E. Britton). 



