4!»S BIOLOGICAL SURVEY OF 



V. (dolichovespula) arenaria (Fabr.) (=diabolica (Sauss.)). 

 Yellow-jacket. Common, June 21-Sept. 6. 



V. (dolichovespula) maculata (L.). White-faced hornet. 

 s. \\\ Barbor, July 10, Sept. 6. 



V. (V.) austriaca (Panz.). Bar Harbor, Aiil». 1(1. 



V. (V.) maculiprons (Buy.). Another Yellow Jacket. 



Y. (dolichovespula) xoryegica (Fabr.) var. noiivegicoides 

 (Sladen). Bar Harbor, June 23; S. W. Harbor, Aug. 21. 



V. (Y.) rupa (L.) var. acadica (Sladen). X. E. Harbor, Aug. 

 11. 



Y. (V.) rufa (L.) var. consobrina (Sauss.). Small white- 

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

 under ground and under boards, etc. 



Y. (Y.) vulgaris (L.) (=communis (Sauss.)). Yellow- 

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

 below ground. Feeds heavily on aphids at Corfield. 



Sphecidae 



Astata Latreille 



A. (astata) leuthstromi Ashni. Eden, July 24. 

 A. (astata) unicolob Say. Eden, July 23. 



Larropsis Patton 



L. nisTixcTA 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. 



Chlorion Latreille 



C. (ammobia) ichneumoneum (Linn.). S. AY. Harbor on 

 Solidago, Aug. (Fernald). 



C. prionyx atratfm (Lep.). Conner's Point, Aug. (Fern- 

 ald). 



Podalonia Spinola 



P. violaceipennis LePel. Eden; Greer Mt.; S. W. Harbor, 



July 11-25. 

 P. luctuosa (Sin.). Conner 's Point, Aug. (Fernald). 



