41() BIOLOGICAL SURVEY OF 



I' akuxklom m \ 1 tecker 



P. dimediata Cress. Bar Harbor, June 7. 



1*. pleuritica Loew. Upper Hadloek Pond; Bar Harbor, 



June 10-13. 

 1*. gracilipes Loew. Bar Harbor, July 10. 

 P. munda Loew. Station F418. 



Americina Mallocb 



A. adusta Loew. Bar Harbor, July 2<>. 

 A. in hi; mis Loew. Bar Harbor, July 25. 



Orthacheta Becker (Orthochaeta auct.) 



0. cornuta Loew. Duck Brook, June 13. 



Amaurosoma Becker 



A. brunneicosta Jobns. Echo Lake, June 27. 



Fucellia B.-Desvoidy 



F. maritima Halid. Kelp fly. Common, June 20-July 15. 



Anthomyia Meigen 



A. pluvialis Linn. Common, June 21-July 17. 



Eustalomyia Kowarz 



E. brixia Walk. N. E. Harbor, July 16 (Minot). 



Hydrophoria Desvoidy 



H. proxima Mall. Witch Hole Pond; Salisbury Cove, June 



13-July 18. 

 H. nivisA Meig. Salisbury Cove, July 14. 

 H. uniformis Mall. Salisbury Cove, Aug. 11. 

 IT. ambigua Fall. Bar Harbor; Echo Lake, June 14-.Tuly 20. 



Proboscimyia Bigot 



P. siphonixa Bigot. Bar Harbor, May 25. 



