362 BIOLOGICAL SURVEY <>K 



M. mitua Loew. Duck Brook, Sept. 11, 1922. 



M. obscuea Walk.:' S. W. Harbor, Sept. (5. 



M. perlonga Johan. Bar Harbor; Duck Brook; Green Mt., 



June 13 Sept. 11. 

 M. punctata Meig. Bar Harbor, July 2<). 

 M. scalaris Loew. Bar Harbor; Salisbury Cove, June 15- 



Sept.ll. 

 M. socia Johan. kt Mt. Desert," July 30 (McAtee). 

 M. tbichonota Loew. Bar Harbor; Echo Lake, June 14- 



Sept. 11. 

 M. ichneumon Say. S. W. Harbor, Sept. 6. 

 M. iMPELLANS Johan. Bar Harbor, Aug. 10. 



Sceptonia Winnertz 



S. nigra Meig. "Mt. Desert," July 30 (McAtee). 



Bibionidae. The March Flies 



ind ai 

 thev breed 



Also found around decaying vegetable matter in which 



Plecia Weideman 



P. heteroptera Say. S. W. Harbor ; Echo Lake ; Bar Harbor, 

 Sept. 7-13. There was a hatch at Corfield, Sept. 17. 



Bibio Geoffroy 



B. abbreviatus Loew. Nurseries sweeping grass, May 25. 

 Larvae feed on grass so sweeping grass gives the best col- 

 lecting. 



B. basalis Loew. Bar Harbor; Echo Lake; S. W. Harbor, 

 June 11-24. 



B. iiumeralis Walk. Possibly the second known specimen 

 of this was taken in a crocus blossom, Corfield, Sept. 25, '40. 



B. longipes Loew. S. W. Harbor, Sept. 6. 



B. slossonae Coq. Record of capture lost. 



B. variabilis Loew. Bar Harbor; Echo Lake; June 8-17. 



B. sp. Penikese beating oak. Does not agree with any in 

 A.M.N.H. but types are away. 



