THE MOUNT DESERT REGIOISr 437 



V. (V.) RUFA (L.) var. consobrina (Sauss.). Small white- 

 faced hornet. Common, June 20-Sept. 6. Builds its nest 

 under ground and under boards, etc. 



V. (V.) VULGARIS (L.) (= COMMUNIS (Sauss.)). Yellow-jackct. 

 N. E. Harbor; Bar Harbor, June 30-July 21. Nests below 

 ground. Feeds heavily on plant lice at Corfield. 



Sphecidae 



AsTATA Latreille 



A. LENSTROMi Aslim. Edcii, July 24. 

 A. uNicoLOR Say. Eden, July 23. 



Larropsis Patton 



L. DisTiNCTA Smith. Bar Harbor ; Eden ; S. W. Harbor, July 

 19-29. Most of the members of genus burrow in sand and 

 provision their nests with Orthoptera. 



Trypoxtlon Latreille 



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

 of this genus vary in their nest building but provision them 

 with spiders. 



Sphex Linnaeus 



S. ARVENSis Dahlb. Common, June 11-Aug. 23. All of the 

 species in this genus build in bare ground and provision 

 with spiders. They are one of our most interesting groups. 



S. sp. Mating pair. Middle Road, July. 



Podalonia Spinola 



P. vioLACEiPENNis LePcl. Edcu ; Green Mt. ; S. W. Harbor, 

 July 11-25. 



