CLASSIFICATION OF DIPTKRA. 



5*-r 

 / 



BRACHYCERA. 

 Metagnatha. 

 Rhyphidae. 

 Bibionidae. 



Bibioninae. 

 Bibionini. 

 Simuliini. 

 Orphephilinae. 

 Blepharocerinae. 

 Metarhyncha. 



Homceodactyla. 

 Stratiomyidae. 



Xylophaginae. 

 Stratiomyinae. 

 Leptidae. 



Leptinae. 

 Nemistrinae. 

 Tabanidae. 



Tabaninae. 

 Acrocerinae. 

 Heterodactyla. 

 Pleroneiira. 

 Therevidae. 

 Therevinae. 

 Therevini. 

 Scenopinini. 

 Apiocerinae. 



I have given these more pretentious systems of classi- 

 fication of the diptera in order that the tyro in their study 

 may not reach the erroneous conclusion that any system 

 is authoritative. Frankly, I do not have a great deal of 

 faith in any of them. They are, in part at least, the bi- 

 ased personal opinions of their authors, their individual 

 views as to the importance of the different characters, 

 opinions which can only reach an approximate equilib- 

 rium after we have a much greater knowledge of ancient 

 types, and perhaps of the embryology of modern forms. 

 Upon the whole, Osten Sacken has brought a wealth of 

 7 





Bombylidae. 



Anthracinae. 



Bombylinae. 

 Asilidae. 



Asilinae. 

 Midinae (sic). 

 Eremoneura. 



Orthorrhapha. 

 Kmpididae. 



Empidinae. 

 Hybotinae. 

 Dolichopodidae. 

 Diaphorinse. 

 Dolichopodinae. 

 Cyclorrhapha. 

 Syrpharia. 



Platypezidae. 

 Lonchopteridae. 

 Phoridae. 

 Pipunculidae. 

 Syrphidae. 

 Myodaria. 



Conopidae. 

 Muscidae. 



