180 BIOLOGICAL SURVEY OF 



Plectbocnemia Stephens 



P. CONFUSA Hagen, Corfield, Aug. 15. 



POLYCENTBOPUS Curtis 



P. ALBipuNCTATus Bks. Bar Hai'bor, July 6-7 (Br,). Station 



F251, July 18. 

 P. coNFUSus Hag. Bar Harbor, July 21. 

 P. sp. Bar Harbor; Witches Hole, July 22-30. 



Khyacophilidae 

 Ehyacophila Pictet 



R. iNVARiA Wlk. Long Pond, July 16. 



R. TORVA Hag. Canyon Brook 1000 ft. elevation, July 20. Bar 

 Harbor; Duck Brook, June 7-30. 



Sericostomatidae 



Helicopsyche Hagen 



H. BOREALis Hag. Echo Lake, July 17. 



Lepidostoma Eambur 



L. AMERICANA Bauks. Bar Harbor, July 17. 

 L. FEOSTi (Milne). Bar Harbor, Aug 16 (Br.). 

 L. sp. 



Lepidostomatinae 

 L. gen. sp. Bar Harbor, July 7 (Br.). 



