THE MOUNT DESERT REGION 367 



T. trispilus var. sodalis Will. Echo Lake; Eden; Bar Har- 

 bor, July 17-29. 

 T. typhus Whitn. S. \Y. Harbor, July 19-Aug. 8 (Br.). 

 T. vivax 0. S. Gorfield, Aug-. 13 ; Witch Hole, Aug. 27. 

 T. zonalis Kby. S. W. Harbor, July 11. 

 T. sp. near astutus. Record of capture lost. 

 T. sp. near gkacilipalpus and trepidus. Laboratory, Aug. 11. 



Rhagionidae. The Snipe Flies 



A woodland form where there is plenty of foliage and 

 ground growth. 



Symphoromyia Frauenfeld 



S. cuRRANi Leonard. Laboratory, June 30. 



Ehagio Fabricius (Leptis Fabricius) 



R. gkacilis Johns. Sieur de Monts Spring; Duck Brook, 



July 22-Aug. 18. 

 R. mystacea Macq. Common, June 13-July 4. 



Chrysopilts Macquart 



C. quadratus Say. Common, July 8-20. 



Spania Meigen 



S. nigra var. Americana Johns. Witch Hole Pond; Jordan 

 Pond, June 10-21, 1921. 



Scenopinidae. The Window-flies 

 They are said to breed in fungus. 



Scenopints Latreille 



S. fenestralis (Linn.). Bar Harbor, July 29; Northeast 

 Harbor, Aug. 10 (Minot). Parasitic on "buffalo beetles." 



Asilidae. Tlie Robber Flies 

 Along the edges of brooks and clearings in warm sunlight 

 is the place to look for these. Also where other insects are 

 attracted by freshly cut timber or cordwood. 



