DIPTERA. 241 



Americina Malloch, 23-139. 

 A. adusta (Loew). 

 Me.— 7, 8. N. H.— 11, 12, 15. May 30-July 29. 



A. inermis (Loew). 



N. H.— 11, 12, 14. June 7- July 4. 



Mass.— 23, 27, 28. July 25-Aug. 9. 



Achaetella Malloch, 23-140 {Parallelomma of authors). 



A. varipes Walker. 



Me.— 7, 8, 9. N. H.— 11, 15. Vt.— 16. June 16-July 27. 



Mass.— 23, 26, 27, 28. Conn.— 35. May 30-Aug. 5. 



Cordylurella Malloch, 19-78c. 



C. nebulosa (Coquillett). 



Mass. — Provincetown, June 28, 1891 (Morse). 



Orthacheta Becker. 



O. dissimUis Malloch, 24-194. 



Me.— 6. N. H.— 15. May 29-June 5. 



Mass.— 23, 26. Conn.— 34, 35. May 10-June 16. 



Pselaphephila Becker. 

 P. similis Coquillett. 



N. H. — Hampton, Apr. 14 and June 26 (Shaw). 

 Mass. — Beverly, Apr. 20 {E. Burgess). 



Acanthocnema Becker. 

 A. albibarba (Loew). 

 N. H.— White Mts. {Osten Sacken). 



A. nigrimana Zetterstedt. 



N. H.— White Mts. (U. S. Nat. Mus.). 



Microprosopa Becker. 



M. flavinervis Malloch, 24-193. 

 Mass. — Auhurndale, May 22. 



M. volucricaput (Walker). 



N. H. — Mt. Washington (Mrs. Slosson); Mt. Washington, 

 "Alpine Garden," 5000 ft., July 4, 1914. 



M. haemorrhoidalis Meigen. 



N. H.—'' White Mts." (Osten Sacken). 



Trichopalpus Rondani. 



T. punctipes (Meigen) (Chaetosa punctipes (Meigen) Coquillett). 

 Me.— Monmouth, July 19, 1904 (Frost). 



T. palpalis (Coquillett) (Opsiomyia palpalis Coquillett). 

 Me — Mt. Desert, July 29. N. H.— W^hite Mts. Vt.— Ben- 

 nington, June 24. 



