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-Jiily 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. 



Cordylxurella Malloch, 19-78c. 



C. nebulosa (Coquillett). 



Mass. — Provincetown, June 28, 1891 (Mo7^se). 



Orthacheta Becker. 



O. dissimilis 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. B..— 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 pu7ictipes (Meigen) Coquillett). 

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



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

 Me.— Mt. Desert, July 29. N. H.— White Mts. Vt.— Ben- 

 nington, June 24. 



