FAMILY MICROI'EZID.T: 307 



KEY TO GENERA 



1. Head subtriangular, much longer than high 2 



Head orbicular, but little longer than high 3 



2. Apical cell open or closed in the wing margin (1, 2). . . .Micropeza Meigen 

 Apical cell closed and petiolate Neriocephalus Enderlein 



3. Apical cell open (3, 4) Metopobrachia Enderlein 



Apical cell closed and petiolate Cliopeza Enderlein 



* 1922, Arch, fur Naturg., Ixxxviii. Abt. 5, pp. 140-229. 



