THE MOUNT DESERT REGION 391 



E. compactus Walk. Bar Harbor; Echo Lake, June 13-17. 

 E. dimidiatus Wied. Bar Harbor; S. W. Harbor; Salisbury 



( Jove, June 11-Sept. 6. 

 E. flavipes Walk. Bar Harbor; S. W. Harbor, June 11-July 



25. Green Mt. summit, July 26. 

 E. NEMORUM Linn. Bar Harbor; Salisbury Cove, July 24. 

 E. obscurus Loew. Witch Hole on blackberry blossoms, June 



16. Scarce. 

 E. saxorum Wied. Witch Hole Pond, June 13. 

 E. tenax Linn. "Drone fly." Common, July 10-Sept. 22. 



The larva is known as the "rat-tailed larva" and lives in 



putrid water. 

 E. transversus Wied. Bar Harbor ; S. W. Harbor ; Salisbury 



Cove, June 15-Sept. 6. 



Merodon Meigen 



At. equestris Fab. Xarcissus fly. Bar Harbor, July 25 (Met- 

 calf ) ; Corfield, June 25-29. Introduced. The larva lives 

 in Narcissus and other bulbs. 



Mallota Meigen 



M. posticata Fab. Bar Harbor, June 8-July 27; Corfield 

 June 27 ; Duck Brook, July 1 ; Bubble Brook on blackberry 

 blossoms, July 2. 



POLYDONTOMYIA Williston 



P. curvipes Wied. Narrows, June 9-Aug. 13. 



Lejops Eondani 



L relictus Curran & Fluke (Helophilus chrysostoma auct., 



not Wied.). Bar Harbor, July 10. 

 L. lunulatus Meig. (H. hamatus Loew). Witch Hole Pond; 



Bar Harbor; Salisbury Cove, June 13-July 18. 

 L. (eurhimyia) stipatus Walk. (H. conostoma Will.). Witch 



Hole Pond, June ID. 



