DIPTERA. 237 



Xenocoenosia Malloch. 



X. calophaga (Loew); Malloch, 20-162. 

 N. H. — Mt. Washington {Mrs. Slosson). 



Mass. — New Bedford {Hough). Conn. — New Haven, Oct. 16 

 {Viereck). 



Coenosia Meigen. 

 C. calopyga Loew. 



N. H.— Mt. Washington {Mrs. Slosson). 

 Conn. — New Haven, Oct. 15 {Viereck). 



C. compressa Stein, 04-489. 



Me.— 4, 7, 8. N. H.— 12, 13. July 7-Sept. 10. 



Mass.— 23, 25, 32. June 28-Aug. 26. 



C. denticornis Malloch, 20-164. 

 N. H.— Glen House, June 11, 1916. 



C. errans Malloch, 21-204 {C. flavi-pes Stein, 1897, not Williston, 

 1896, = C. steinii Johnson, 1913, not Verrall, 1912). Although 

 Stein (20-104) considers his C. flavipes the same as C. hypopy- 

 gialis, I think he is in error. 



N. H.— Glen House, July 2; Mt. Monadnock, June 22; Pelham, 

 Sept. 11 {Bridwell). 



Mass.— Woods Hole, July 23. R. I.— Kingston, July 17-25 

 {Barlow) . 



C. flavicoxa Stein. 



Me.— 3. N. H.— 12, 13. Vt.— 17. June 25-Sept. 10. 



Mass.— 23, 27. R. I.— 33. Conn.— 35. May 14— July 12. 



C. fuscifrons Malloch, 19-96. 



Me.— 1, 4, 8. N. H.— 11, 13. Vt.— 22. June 11-Sept. 10. 



Mass.— 23. July 25. 



C. hypopygialis Stein. 



N. H.— Glen House, July 3. 



Mass. — New Bedford {Hough); Cohasset, June 1 {Bryant). 



C. humilis Meigen {C. nana Zetterstedt). 



N. H. — Hampton, May 24 {Shaiv). 



Mass. — Forest Hills, June 21, in greenhouse {H. A. Preston); 



Waban, Apr. 1 {Reiff); New Bedford {Hough); Woods Hole. 



Conn. — Suffield {Dimmock) . 



C. lata Walker (C canescens Stein). 



Me.— 6, 10. N. H.— 11, 14, 15. Vt.— 20. 



Mass.— 23, 24, 26, 27, 28, 29, 31, 32. R. I.— 33. Conn.— 35. 



Although Stein (20-103) questions the identity of the two 

 species, I think there is little doubt but that they are the same. 



C. modesta Loew. 



Me.— Ft. Kent, Aug. 19. N. H.— Claremont, May 20. Vt.— 

 Burlington, June 24. 



