ARRANGEMENT. 



The systematic arraiigeiuent adopted by Bezzi in 1903 in the latest 

 Katalog der Paliiarktischen Dipteren is only a slight modihcation of the 

 one proposed by Brauer in 1883, and is as follows : 



DIPTERA OllTHOIUlHAPHA BRACHYCEilA 



fXoTACANTUA 



PLATYGBNYA 



HOMCEODACTYLA 



iHETERODACTYLA 



ORTHOGENYA 

 ACROPTERA 



Stkatiumyiid.*;. 

 Xylophagid^. 



[C(EN0MYIID,4i. 

 fTABANID.E. 



ILeptidid.e. 

 ,, ( ackocekidj-:. 



VBOMBYLIMORPHA 1 ^y 



(MyDAIU-E. 

 - ASILID.E. 



' bombyliid.e. 

 ( Therevid.e. 

 iscenopinid.e. 



fEMPIDID.E. 

 \ DOLIC'HOPODID.E. 

 LONCHOPTEKID.E. 



T A N Y S T O M A 



( Peocephala 



I 



' POLYTOMA 



In Brauer's scheme the PnoKiD.i; were placed under the Cyclorrhapha, 

 Sectio AscHiZA, Tribus Hypocera, in company with the Platypezidje ; the 

 AcANTHOMERiDyE were between the Tabanid.-e and the Leptid.e, and the 

 Apiocerid.e were Ijetween the Mydaid^I'; and the Asilid.^v Brauer also 

 used the terms Stratiomyid.e, Leptid.e, MydaidJ':, Bombylid.e,* Empid.e, 

 and DoLiciiOPODA, and he apparently included Ccenomyia in his 

 Xylophagiile. 



In 1880 and 1882 Brauer had used the following terms derived from 

 Schiner. 



CYCLOCERA 



f NOTACANTHA . 



ITanystoma. 



AND 



[ BOMBYLIMOEPH A. 



ORTHOCERA = J Peocephala. 



[Polytoma. 



but Schiner (1868) included the Leptid.e in his ORTHOCERA. 



* Haliday defended the use of such names as Bomhijlidte ratlier than the proper etymological form 

 Bombyliada: in order to preserve the uniformity of the termination, and quoted Dcucalidx from Deucalion. 

 40 



