xii CLASSIFICATION OF DIPTERA 



I. THE ORTHORRHAPHA. Section I. NEMATOCERA 

 contain the following families: 



*i. 'PuHcidae (Fleas). 



*2. Cecidomyidae (Gall Midges). 



f *3. Mycetophilidae (Fungus Gnats). 



■f*4. Bibionidae (Fever Flies, St Mark's Flies). 



t*5. Simuliidae (Sand Flies). 



*6. Chironomidae (Midges). 



7. Orphnephilidae. 



t8. Psychodidae (Owl Midges). 



f*g. Culicidae (Mosquitoes), 



fio. Dixidae. 



*ii. Ptychopteridae (False Daddy Long Legs). 



*I2. Limnobiidae (False Daddy Long Legs). 



f*i3. Tipulidae (True Daddy Long Legs). 



*I4. Rhyphidae (Window Flies). 



Section II. BRACK YCERA 



■f"*i5. Stratiomyidae (Chameleon Flies). 



■t-*i6. Tabanidae (Gad Flies). 



*I7. Leptidae (Leptis Flies). 



t*i8. Asilidae (Robber Flies). 



•f*i9. Bombylidae. 



*20. Therevidae. 



•f2i. Scenopinidae. 



+22. Cyrtidae. 



■f*23. Empidae (Empis Flies). 



■f*24. Dolichopodidae. 



•\-2^. Lonchopteridae. 



2. THE CYCLORRHAPHA. Section I. ASCHIZA 



Frontal lunule more or less indefinite ; no frontal suture. 



*26. Platypezidae. 

 f27. Pipunculidae. 

 t*28. Syrphidae (Hover Flies). 



' These are by some raised to the rank of an order called Aphaniptera or 

 Siphonaptera, but there is no reason whatever for separating the Fleas or Pulicidae 

 from the Diptera. 



