178 BIOLOGICAL SURVEY OF 



SiMULIIDAE 

 Prosimulium Kaubaud 



P. HiRTiPEs Fries. Echo Lake; Green Mt., June 17-Jnly 25. 



SiMULiUM Latreille. 'Black flies' 



S. PARNASSUM Mall. Bar Harbor, July 11. 



S. VENUSTUM Say. Bar Harbor; S. W. Harbor, June 7-25. 



Blepharoceridae 

 Blepharocera Macquart 



B. TENuiPES Walk. Duck Brook, June 13. 

 Xylophagidae 



Khachicerus Haliday 



R. NiTiDUs Johns. Foot of Pickett Mt. ; Bar Harbor, July 29, 

 1919. 



Xylophagus Meigen 



X. rufipes Loew. Strawberry Hill; Bar Harbor, June 9, 

 1921. 



Stratiomyidae 



Allognosta Osten Sacken 



A. BREvicoRNis Johiis. Salisbury Cove, July 12. 

 A. FusciTARSis Say. S. W. Harbor; Bar Harbor, July 11-22. 

 A. oBSCuRivENTRis Loew. Bar Harbor; N. E. Harbor (Minot), 

 June 7-26. 



Actina Meigen 



A. viRiDis Say. Bar Harbor; Echo Lake; S. W. Harbor, 

 June 7-21. 



Macrosargus Bigot (Sargus of authors) 



M. cupRiNus Linn. Salisbury Cove, July 12-Aug. 10. 



M. DECORUS Say. Salisbury Cove; Bar Harbor, June 9-16. 



MicROCHRYSA Loew 



M. poLiTA Linn. Common, July 17-Aug. 15. 



Stratiomyia Geoffroy 



S. BADiA Walk. Common on flowers, July 12-Aug. 1. 



