xii CLASSIFICATION OF DIPTERA 



I. THE ORTHORRHAPHA. Section I, NEMATOCERA con- 

 tain the following families: 



*i. fPulicidae (Fleas). 



*2. Cecidomyidae (Gall Midges). 



*3. Mycetophilidae (Fungus Gnats). 



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



*5. Simuliidae (Sand Flies). 



*6. Chironomidae (Midges). 



7. Orphnephilidae. 



8. Psychodidae (Owl Midges). 

 *g. Culicidae (Mosquitoes). 



10. Dixidae. 



*ii. Ptychopteridae (False Daddy Long Legs). 



*I2. Limnobiidae (False Daddy Long Legs). 



*I3. Tipulidae (True Daddy Long Legs). 



*i4. Rhyphidae (Window Flies). 



Section II, BRACHYCERA 



*I5. Stratiomyidae (Chameleon Flies). 



*i6. Tabanidae (Gad Flies). 



*I7. Leptidae (Leptis Flies). 



*i8. Asilidae (Robber Flies). 



*I9. Bombylidae. 



*20. Therevidae. 



21. Scenopinidae. 



22. Cyrtidae. 



*23. Empidae (Empis Flies). 

 *24. Dolichopodidae. 

 25. Lonchopteridae. 



2. THE CYCLORRHAPHA. Section I, ASCHIZA 

 Frontal lunule more or less indefinite; no frontal suture. 

 *26. Platypezidae. 

 27. Pipunculidae. 

 *28. Syrphidae (Hover Flies). 



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

 Siphonafitera, but there is no reason whatever for separating the Fleas or PuUcidae 

 from the Diptera. 



