THE MOUNT DESERT REGION 49 



Plathemis Hagen 



P. LYDiA Drury. An all summer form that stays on the ponds. 

 Bar Harbor, June 11-July 20. 



Sympetruji Newman 



S. RUBicuNDULUM Say. Common ; Echo Lake ; Bar Harbor ; 



Tremont, Aug. 9-Sept. 8. Found on the wet meadows. 

 S. cosTiFERUM Hag'. Bar Harbor, Aug. 18. Not as common 



as the above. 

 S. OBTRUSUM Hag. Narrows; Witch Hole Pond, Aug. 13-18. 



Feather Bed Alt. 1000, Sept. 14. 

 S. viciNUM Hagen. Bar Harbor, Aug. 10. Sec. 28, Oct. 17. 



A beautiful autumnal species. 



Leucorrhinia Brittinger 



L. INTACTA Hagen. Common from the first of June to Aug. 1. 

 L. GLACiALis Hagen. Echo Lake; Beaver Dam; Witch Hole; 



New Mill Meadow, June 18-July 24. 

 L. FRiGiDA Hagen. Echo Lake ; Witch Hole Pond, June 13- 



July 30. Common. 

 L. PROxiMA Calvert. Witch Hole Pond; Bar Harbor; New 



Mill Pond; Indian Point, June 11-July 24. 

 L. HUDSONiCA Selys. Canada Brook, June 17; New Mill 



Meadow, June 18; Witch Hole, July 2; New Mill Pond, 



July 2. 



Helocordulia Needham 



H. UHLERi Selys. A bog loving species and flying from June 

 to the end of July. 



Basiaeschna Selys 



B. JANATA Say. Common at New Mill Meadow, Witch Hole 

 and other ponds and streams in early summer. 



Agrionidae. The Damsel flies 

 Agrion Fabricius 



A. MACULATUM Beauvais. Long Pond ; Eagle Lake ; swamp at 

 Eden; Seal Cove Brook, mating Aug. 7. June 30-Aug. 10. 



