THE MOUNT DESERT REGION 



155 



Vespidae. Social wasps 



Vespula Thomson 



V. ARCTicA Vier. (F. borealis Lewis & Kby.). Northern hor- 

 net. Echo Lake; N. E. Harbor; Bar Harbor; Green Mt., 

 July 12-29. 



V. coNsoBRiNA Sauss. Small white-faced hornet. Common, 

 June 20-Sept. 6. 



V. MACULATA Linn. White-faced hornet. S. W. Harbor ; Bar 

 Harbor, July 10- Sept. 6. 



V. COMMUNIS Sauss. Common yellow-jacket. N. E. Harbor; 

 Bar Harbor, June 30-July 21. 



V. DiABOLicA Sauss. Commou, June 30-Sept. 6. 



V. NORVEGiCA Fab. S. W. Harbor ; Bar Harbor, Aug. 12-21. 



V. VIDUA Sauss. Bar Harbor ; N. E. Harbor, Aug. 10-Sept. 22. 

 Sphecidae 

 Larrinae 



AsTATA Latreille 



A. UNicoLOR Say. Salisbury Cove, July 23. 

 A. LENSTROMi Ashm. Salisbury Cove, July 24. 



Larbopsis Patton 



L. DisTiNCTA Smith. Bar Harbor; Salisbury Cove; S. W. 

 Harbor, July 19-29. 



Trypoxyloninae 

 Trypoxylon Latreille 



T. FRiGiDUM Smith. Common, July 17-Sept. 6. 

 Sphecinae 



Sphex Linnaeus 



S. arvensis Dahlb. Common, June 11-Aug. 23. 



PoDALONiA Spinola (Psammophila Dahlbom) 



P. violaceipennis Le Pel. Salisbury Cove ; Green Mt. ; S. W. 

 Harbor, July 11-25. 



Chalybion Dahlbom 



C. caeruleum Linn. Blue mud-dauber. Bar Harbor, July 

 24. It stores its nest with spiders, usually species of 

 Epeira. 



