352 BIOLOGICAL SURVEY OF 



Hydrina Desvoidy 



H. DEBiLis Loew. Green Mt. ; Long Pond, July 25-Sept. 7. 



H. sp. Penikese, Aug. 15. 



H. FOEMOSA Loew. Bar Harbor, Aug. 12-16. 



H. oBscuKiPEs Loew. Bar Harbor, Aug. 16. 



H. scAPULAEis Loew. Narrows, July 27-Aug. 13. 



H. PRocTERi Cr. First taken on New Mill Pond in blossoms 



of Nymphaea advena, July 25, '35. Type locality. 

 H. TIBIALIS Cress. New Mill Pond on Nymphaea advena, 



July 25. 

 H. VALiDA Loew. Narrows, July 27-Aug. 13. 



Lytogaster Becker 



L. GRAVIDA Loew. Bar Harbor, July 24. 



Parybra Stenhammer 



P. ALPiNA Cress. Long Pond; Bar Harbor, July 16-Aug. 10. 



P. BiTUBERcuLATA Loew. Bar Harbor, Aug. 10. 



P. iMiTANs Loew. Narrow^s, Sept. 12. 



P. QUADEiTUBERCULATA Loew. Bar Harbor, July 20. 



P. vAEiA Loew. Duck Brook; Bar Harbor, Aug. 18. 



DiMECOENiA Cresson 



D. spiNosA Loew. Narrows, Aug. 13-Sept. 12. 



OiRRULA Cresson 



C. GiGANTEA Crcss. Nari'ows, Aug. 13-Sept. 12. 



Ephydra Fallen 



E. suBOPACA Loew. Narrows, Aug. 13. 



ScATELLA E. -Desvoidy 



S. LUGENs Loew. Bar Harbor, June 11 ; S. W. Harbor, July 13. 

 S. STENHAMMERi Zctt. Echo Lake, June 17; S. W. Harbor, 

 July 11. 



