THE MOUNT DESERT REGION 337 



CoNDiDEA Coquillett 



C. LATA Coq. Foot of Pickett Mt., June 21. On flower of the 



Viburnum. 

 C. SEXFAsciATA Walk. South of Manset ; S. W. Harhor, June 16, 



1921. 



Sericomyia Meigen 



S. BiFAsciATA Will. Eclio Lake, June 17- July 12. 



S. CHRYsoToxoiDES MacQ. Bar Harbor ; Echo Lake ; S. W. 



Harbor, June 9-Sept. 8, 

 S. MiLiTARis Walk. S. W. Harbor; Bar Harbor; Echo Lake, 



June 22-Sept. 8. 



Eristalis Latreille 



E. ARBUSTORUM Liuu. Common, June 15-Sept. 6. 



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



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



Cove, June 11-Sept. 6. 

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

 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. SAXORUM Wied, Witch Hole Pond, June 13. 

 E. TRANSVERSus Wicd. Bar Harbor ; S. W. Harbor ; Salisbury 



Cove, June 15-Sept. 6. 

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



25. Green Mt. summit, July 26. 

 E. BASTARDii Macq. S. W. Harbor; Salisbury Cove; Bar 



Harbor, June 22-Sept. 9. Appears just before the middle 



of June when Nymphaea advena blooms, and is found on 



various flowers around the edges of ponds until the cold 



days in September. Common, but not numerous. 

 E. oBscuRus Loew. Witch Hole on blackberry blossoms June 



16. Scarce. 



Merodon Meigen 



M. EQUESTRis Fab. Narcissus fly. Bar Harbor, July 25 (Met- 

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

 in Narcissus and other bulbs. 



