42 DIPTERA OF AUSTRALIA, 



Heteropeza, Winn. (Stett. E.Z. VII., 1846) and Spaniocera, Winn. 

 (Linnaea Entom. VIII., 1853) having never had an opportunity 

 of examining specimens; and he totally disregards those of Rondani 

 for the reason that they were founded on too inexact observations. 

 Meinert's genus Miasto7' [Naturh. Tidssk. (3) iii.] was not 

 estaVjlished until 1864, two years after the publication of Loew's 

 monograph. Keverting to Baron Osten-Sacken's work it is found 

 that the method of classification he employs is derived chiefly 

 from those of Winnertz and Loew, as above tabulated ; but in 

 order to better compare the three it is desirable to append that of 

 the Baron, more particularly as it is mainly from these three 

 authors that the arrangement followed in the present paper is 

 derived, there being no reason to deviate much from the system 

 applied by, and the result of much labour on the part of, these 

 proficient Dipterologists ; it stands thus : — 



Section I. CECID0:MYIXA, Loew. 



Cecidomyia, Meig. — Three or four longitudinal veins ; in the 

 first case the third vein is forked, thus representing the third and 

 fourth veins, which are coalescent in the greater part of their 

 extent ; in some rare cases a branch of this fork or the whole 

 fork becomes obsolete ; in the second case all the four veins are 

 simple. Surface of the wings hairy ; margins with long cilia^ 

 Antennae long, moniliform or cylindrical, generally verticillate, 

 seldom without verticils, from 13- to 36-jointed. 



Spaniocera, Winn. — Three longitudinal veins, which are all 

 simple (not forked) ; the first close by the costa, the second at 

 some distance from it, but reaching the mai'gin of the wing before 

 its tip. Hairs on the surface of the wing scaly. Antennae filiform, 

 13-jointed, joints elongated, cylindrical, with a short puljescence 

 and without verticils. 



Lasioptera, Meig. — Three longitudinal veins, the first and 

 second of which run very near the costa, and are ao closely 

 approximated as to be hardly di-scernible. Wings rather short 

 and broad. Antennae from 16- to 26-jointed ; joints subglobular^ 



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