DIPTERA. 271 



Discocerina Macquart. 

 D. leucoprocta Loew. 



Me.— 7, 8. June 9-July 17. 



Mass.— 27, 28, 29. R. I.— 33. May 15-July 25. 



D. parva Loew. 



Me.— 4. N. H.— 11. Aug. 18. 



Mass.— 23, 25, 27. Conn.— 35. May 31-Oct. 19. 



Polytrichophora Cresson, 24-161. 

 P. conciliata Cresson, 24-161. 

 Me.— Machias, July 17, 1909. 

 Mass. — Muskeget, July 14 (Brooks). 



Allotrichoma Becker. 

 A. simplex (Loew). 

 Mass. — Auburndale, May 7, 1905; Boston, Sept. 22. 



A. trispinum Becker. 



Conn. — New Haven, May 4; Branford, June 27 (Viereck). 



Axysta Haliday. 

 A. cesta Haliday. 

 Mass. — Woods Hole. 



Glenanthe Haliday. 

 G. litorea Cresson. 

 Mass.— Gloucester, June 20, 1924. 



Hydrellia R.-Desvoidy. 

 H. coniformis Loew. 

 R. I. — Newport (Osten Sacken) ; Providence, Sept. 16. 



H. formosa Loew. 

 Me. — Bar Harbor, Aug. 12. 



R. I. — Kingston, July 25, 1905 (Barlow). Conn. — New Haven, 

 May 14, 1904 (Viereck). 



H. hjrpoleuca Loew. 



Me. — Moosehead Lake, July 14, 1907; Princeton, July 12. Vt.— 



St. Albans, June 20. 

 Mass.— Nantucket, July 20, 1910 (G. M. Allen); 'North Reading, 



June 10. 



H. ischiaca Loew. 



N. H.— Mt. Washington (U. S. Nat. Mus.). 



H. morrisoni Cresson, 24-162. 



N. H.— "White Mts." (U. S. Nat. Mus.). 



H. notiphiloides Cresson, 24-162. 

 Mass.— Nantucket, July 20, 1910 (Allen). 



