170 BIOLOGICAL SURVEY OF 



EucORETHRA Underwood 



E. uNDERwooDi Uiiclerw. Pools in a spring run at the head 

 of Bear Brook, near Bar Harbor, July 21 ; Echo Lake, Sept. 

 (Alexander). The larva is predaceous, feeding upon the 

 larvae of other mosquitoes. 



PsYCHODiDAE. Moth-flies 



PSYCHODA Latreille 



P. ciNEREA Banks. S. W. Harbor, June 18. 



P. siGNATA Banks. Long Pond; Echo Lake; Bar Harbor, 



June 27-July 24. 

 P. SLossoNi Will. Bar Harbor; Salisbury Cove, July 19- 



Aug. 11. 



Chironomidae. Midges 



CuLicoiDES Latreille. Biting midges 



C. SANGUisuGA Coq. Loug Poud, July 16. 



Ceratopogon Meigeu 



C. LEVIS Coq. Bar Harbor, June 22-July 28. 



PsEUDOcuLicoiDES Mallocli 



p. MUTABiLis Coq. 'Mt. Desert,' July 30 (McAtee). 



FoRCiPOMYiA Meigen 



F. SQUAMIPES Coq. 'Mt. Desert,' July 31 (McAtee). 



Palpomyia Meigen 



P. NEBULOSA Mall. Bar Harbor, July 21. 



Johannsenomyia Malloch 



J. BIMACULATA Locw. Bar Harbor, Aug. 10. 



Heteromyia Say 



H. FLAViPEs Meig. Bar Harbor, June 11. 

 H. PLEBiA Loew. Bar Harbor, Aug. 18. 

 H. RUFA Loew. Witch Hole Pond, June 13. 

 H. TRiviALis Loew. Salisbury Cove, July 15. 



Serromyia Meigen 



S. FEMORATA Meig. S. W. Harbor, July 13. 



