48 BIOLOGICAL SURVEY OF 



LiBELLULiDAE. The Skimmers 

 DiDYMOPS Selys 



D. TRANSVERSA Say. A wide ranging form that is common on 

 all part of the island from the middle of June to August. 



Teteagoneuuia Hagen 



T. cYNosuRA Say. Echo Lake, July 12. A strong flying form 



over ponds. 

 T. spiNiGERA Selys. Breakneck Road ; Witch Hole, June 6-12. 



A northern form. 



SoMATOCHLX)RA Selys 



S. ELONGATA Scudder. One specimen taken, Breakneck Rd., 

 June 16, '35 (Alexander). Rare. 



CoKDULiA Leach 



C. sHURTLEFFi Scudder. These fly around the boggy edges of 

 ponds. Bar Harbor ; Witch Hole ; June 6- July 29. 



DoROCOBDTJi/iA Needham 



D. LIBERA Selys. Found around the boggy borders of ponds 

 from the first of June to August. 



D. LEPiDA Hagen. Same as that above. 



Nannothemis Brauer 



N, BELLA Uhler. Witch Hole Pond, June 13. Lower Break- 

 neck Pond, July 8. 



Ceijthemis Hagen 



C. ELisA Hagen. Flies around the edges of ponds. Witch 

 Hole; Hulls Cove, June 15- Aug. 18. 



LiBELLULA Linnaeus 



L. SEMIFASCIATA Burmeister. An early form that frequents 



the brooks. 

 L. QUADRiMACULATA Liuu. Juuc the first to August on ponds 



as well as brooks. 

 L. ExusTA Say. Witch Hole Pond; Long Pond, June 13-26. 



On the ponds. 



