d^ccasiional papers; 



OF THE 



pogton ^ocietp of i^atural l^iitotp. 



VII. 



FAUNA OF NEW ENGLAND. 

 15. 



LIST OF THE DIPTERA OR TWO-WINGED FLIES. 

 By CHARLES W. JOHNSON. 



BOSTON: 



PRINTED FOR THE SOCIETY FROM THE 



GURDON SALTONSTALL FUND, 



FEBRUARY, 1925 



