226 BIOLOGICAL SURVEY OF 



0. JUNCORUM Fall. Upper Hadlock Pond; Salisbury Cove, 



June 10- July 15. 

 0. poLYSTiGMA Meig. Salisbury Cove; Tremont, July 14- 



Aug. 23. 



Chamaemyia Panzer 



C. ELEGANs Panz. Salisbury Cove, July 13, 15. 



Leucopis Meigen 



L. NiGRicoRNis Egger. Common, June 10-Aug. 13. 



Agromyzidae 

 Agromyza Fallen 



A. AENEivEXTRis Fall. Bar Harbor, June 7. 



A. ARTEMisiAE Kalt. {platyptera Tliom.). S. W. Harbor; Seal 



Cove; Bar Harbor, July 11- Aug. 8. The larvae mine the 



leaves of a large number of plants. 

 A. ATRATA Meig. {angulata Loew). Bar Harbor, July 11. 

 A. GENUALis Mel. [coloradensis Mall.). 'Great Heath'; S. W. 



Harbor, July 15. 

 A. LATERALIS Macq. {coquilletti Mall.). Echo Lake; Salisbury 



Cove, July 12-24. 

 A. MELAMPYGA Locw {flaviventris Johns.). S. W. Harbor, 



July 13. The larvae mine the leaves of plantain. 

 A. MOROSA Meig. {magnicornis Loew; luterella Zett.). Bar 



Harbor; S. W. Harbor, June 7-Aug. 20. The larvae form 



swellings in the stems of the iris. 

 A. NASUTA Mel. {madizina Hend.). 'Mt. Desert,' July 30 



(McAtee). 

 A. PARVicoRNis Loew. S. W. Harbor; Narrows, July 10-27. 

 A. posTiCATA Meig. {termmalis Coq.). Common, June 8- 



July 30. The larvae mine the leaves of asters and golden- 

 rods. 

 A. pusiLLA Meig. {trifolii Burg.). S. W. Harbor; Echo Lake; 



Seal Cove, July 13-Sept. 8. The larvae mine the leaves of 



various Cruciferae, Compositae, Leguminosae, etc. 

 A. vARiATA Mall. Narrows, July 27. 

 A. viRiDULA Coq. Green Mt., Aug. 17. 



