THE MOUNT DESERT REGION 185 



D. siNCERus Mel. Long Pond ; Bar Harbor, July 16-Aug. 18. 

 D. sLossoNAE Van D., Cole & Aldr. Echo Lake ; Bar Harbor, 



June 17-July 21. 

 D. socius Loew. S. W. Harbor ; Long Pond, July 15-16. 

 D. SOCIUS var. gladius Van D,, Cole & Aldr. Salisbury Cove, 



July 15. 

 D. VARIABILIS Loew. Bar Harbor, July 20-Sept. 11. 

 D. VARIABILIS var. GRACILIS Aldr. S. W. Harbor, July 15- 



Aug. 23. 



D. WHEELERi Mel. & Brues. S. W. Harbor, July 15. 



Hercostomus Loew 

 Subgenus Gymnopternus Loew 



H. ALBicEPs Loew. Jordan Pond, June 10. 



H. CHALCocHRus Loew. Long Pond, July 16. 



H. FREQUENs Loew. Commoii, June 8-July 17. 



H. PHYLLOPHORUS Loew. S. W. Harbor; Long Pond, June 18- 



July 13. 

 H. sPECTABiLis Loew. Echo Lake, June 27. 

 H. suBDiLATus Loew. Bar Harbor, Aug. 12. 

 H. suBULATUS Loew. Common, July 13-27. 



Paraclius Loew 



P. viciNus Aldr. Narrows, July 27. 



Tachytrechus Loew 



T. MOECHus Loew. Witch Hole Pond, June 13. 



Pelastoneurus Loew 



P. LAMELLATus Locw. Trcmont ; Narrows, June 20-July 27. 

 P. VAGANs Loew. Bar Harbor, Sept. 13. 



Empididae 



EuDRAPETis Melander 



E. ARMATA Mel. Narrows; Salisbury Cove, July 15-27. 



E. PARvicoRNis Mel. Narrows, June 9; Salisbury Cove, 



July 25. 

 E. SPECTABILIS Mell. Narrows, July 27. 



