Si 



lib 



THE TYPE-SPECIES OF THE NORTH AMERICAN 



/ 



GENERA OF DIPTERA 



D. W. COQUILLETT 



Custodian of Diptera, U. S. National Museum 



No. 1719. —From the Proceedings of the United States National Museum, 

 Vol. 37, pages 499-647 



Published August 4, 1910 



Washington 



Government Printing Office 



1910 



