316 



NORTH AMERICAN DIPTERA 



Lauxaniidse I. — 1, Chwtocoelia sp. : 2, Physegenua vitfata ; 3, Chatominettia latelimbata ; 

 4, Homoneura philadelphica ; 5, Pseudogriphoneura ; 6, Neogriphoneura ; 7, Camptoprosopella 

 vulgaris; 8, Lauxaniella opaca ; 9, Steganolauxania latipennis; 10, Dcutominettia bimaculata. 



