DIPTERA. 219 



Cryptolucilia Brauer and Bergenstamm (Pseudopyrellia Girschner). 



C. caesarion Meigen (P. cornicina authors, not Fabricius; see 



Bequaert, 22-90). 

 Me.— 1, 6, 9, 10. N. H.— 14, 15. Vt.— 17, 19, 20. Apr. 25- 



Sept. 28. 

 Mass.— 23, 24, 25, 26, 27, 29, 31, 32. R. I.— 33. Conn.— 34, 



35. Apr. 28-Oct. 10. 



Pyrellia R.-Desvoidy. 

 P. Serena (Meigen). 

 Me.— 2,6,8. N. H.— 11, 12, 13, 14, 15. Vt.— 16, 17, 19, 20, 21, 



22. June 14-Sept. 10. 

 Mass.— 23, 25, 26, 27, 32. R. I.— 33. Conn.— 35. Mar. 26- 

 Oct. 30. 



Mesembrina Meigen. 

 Subgenus Eumesemhrina Townsend, 08-124. 



M. latreillei R.-Desvoidy (Tlf. resplendens of authors, not 



Wahlberg). 

 Me,— 4, 5, 6. N. H.— 11. Vt.— 17, 21. June 24-Aug. 30. 



Morellia R.-Desvoidy. 



M. micans (Macquart). 



Me.— 1, 2, 4, 5, 6, 7, 8, 10. N. H.— 11, 13, 15. Vt.— 17, 19. 



May-Sept. 10. 

 Mass.— 23, 24, 26, 27, 29, 32. R. I.— 33. Conn.— 34, 35. 



May 10-Sept. 5. 



Graphomyia R.-Desvoidy. 

 G. maculata Scopoli. 

 Me.— 1, 3, 4, 8, 10. N. H.— 11, 14, 15. Vt.— 16, 17, 19, 20. 



June 9-Sept. 7. 

 Mass.— 23, 26, 27, 29, 32. Conn.— 34, 35. May 30-Sept. 6. 



Muscina R.-Desvoidy. 

 M. assimilis (Fallen). 



Me.— 6, 8. N. H.— 13, 15. July 13-Sept. 10. 

 Mass.— 24, 25, 26, 27, 28, 32. R. I.— 33. Conn.— 35. Apr. 

 20-Oct. 31. 



M. stabulans (Fallen). The Stable Fly. 



Me.— 6, 7, 8, 9. N. H.— 11, 12, 14, 15. Vt.— 17, 20, 21. Apr. 



22-Aug. 29. 

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



30- Aug. 19. 



M. pascuorum Meigen. 



Me.— 10. N. H.— 11, 13. Aug.-May. 



Mass.— 24, 25, 26, 27, 32. Conn.— 34, 35. Aug.-April. 



A recently introduced species, appearing first in August, 1922 

 (see Johnson, 23-1 and 24-17). 



