384 BIOLOGICAL SURVEY OF 



Citibaena Walker 



C. strigatus Pall. Lunate Onion-fly. Bar Harbor, July 25, 

 L916 (Metcalf); July 19, 1919. 



Chrysotoxum Meigen 



C. derivatum Walk. Salisbury Cove, Aug. 7, 1926. 



C. pasciolatum DeGr. Long Pond ; S. W. Harbor; Bar Har- 

 bor, June 17-July 24. 



C. perplexum Johns. Witch Hole Pd.; S. W. Harbor; Green 

 Mt. Summit, July 17-Sept. 6. Material from Mt. Desert 

 was used in naming the species. See B. S. N. S. Occasional 

 Papers, Vol. 5, p. 69-72, '23. 



Paragus Latreille 



P. bicolor Fab. Salisbury Cove, July 14. 



P. tibialis Fall. Bar Harbor; Salisbury Cove, July 22-24. 



Leucozona Schiner 



L. Americana Cuit. Bar Harbor; Echo Lake; S. W. Har- 

 bor, June 9-23. 



Didea Macquart 



]). fuscipes Loew. Bar Harbor; Echo Lake, June 15-17. 



Sybphus Fabricius 



S. amalopis 0. S. Bar Harbor; Echo Lake, June 9-July 12. 



S. arcuatus Fall. S. W. Harbor, June 21. 



S. perplkxts Osburn. Echo Lake; S. W. Harbor, July 12- 

 Aug. 20. 



S. dis.iectus Will. Bar Harbor; Salisbury Cove; ' 'Nar- 

 rows,'' July 22-Aug. 13. 



S. bmarginatus Say. Bar Harbor, June 15-Aug. 14. 



S. felix ( ). S. Echo Lake, July 17. 



S. johnsoni Curr. Bar Harbor, June 22-23. 



S. latipasciatus Mam. (abbreviatus Will.). Salisbury Cove, 

 July 23-24. 



