124 



NORTH AMERICAN DIPTERA 



=^^ 



18 



27 



35 



^^:^ 



19 



28 



36 



\ 37 



20 



29 



30 



~~^^ 



38 



39 



31 



40 



32 



23 



24 



25 



43 



26 



Mvcetophilid.-e II.— IS, Bolitophiia; 19, Diadocidia ; 20, Paleoplatyuia : 21. Apeition; 22 

 Ditomva: 23 Mycomya; 24, Neuratelia; 25, Allocotocera; '^6 Leptomorphus ; 2 , Po ylepta : 

 " Svntemna- ^9 Paratinia; 30, Azana; 31, Monoclona ; 32. Acnem.a; 3o, Coelosia , 34. 

 Hadroneur^r35. Dziedzickia; 36, Gnoriste; 37. Synapha ; 3S. Boletina; 39. Rondan.ella; 40, 

 Docosia; 41, Megophthalmidia ; 42, Anatella; 43. Exechia. 



