S3? 



Technical Series No. 7. / /o/i "^/Z ^^7^* J^-^ 



U. S. DEPARTMENT OF AGRICULTURE. 



■i^yf 



DIVISION OF ENTOMOLOGY. 



{ 



'HI 



AC. 



REVISION OF THE TACHINID/E 



OF 



AMEEICA NOETH OF MEXICO. 



FAMILY OF PAEASITIC TWO WINGED INSECTS. 



BY 



D. W.' COQUILLETT. 



jj^\THSON/^ 



WASHINGTON: 



GOVERNMENT PlllNTING OFFICE, 

 1897. 



