216 THE DirTEPtA-BRACHYCERA OF TASMANIA, 



2. Hind-angle of wing sloped away. Hemerodpomiinse 

 Hind-angle of wing well developed. o 



3. Anal cell longer than the second basal cell. (In 



the aberrant genera Bicellaria and Sciadocera, in 

 which it is shorter, the discal cell is wanting.) 



Hybotinse 

 Anal cell shorter than the second basal cell. 4 



4. Proboscis long; the anal cross-vein (i.e., the veinlet 



closing the anal cell) strongly recurrent, and be- 

 coming confluent with the anal vein. Empinse 

 Proboscis short; the anal cross-vein meets the anal 



vein at a right aiigle, or almost so. Oeydromiinre 



Of the above subfamilies only the three last are at 



present known to occur in Tasmania, but when the damper 



parts of the island are properly examined the others are 



almost certain to be found. 



Subfamily Hybotinse. 



Two undescribed aberrant genera occur in Tasmania, 

 which probably belong to this subfamily. In one of these, 

 Irononiyia, three veinlets arise from the discal cell, instead 

 of two, as in all the other genera in which the discal 

 cell is present; in this character it agrees with the sub- 

 family Bracliystomatince, but its other characteristics seem 

 to show more affinity with the Hyhotiucp. The other genus, 

 Sciadocera, is very aberrant, and differs from all other 

 genera of the Hybofince in having the eyes in the female 

 widely separated, and in the form of the antennae. 



Tahle of the Tasmanian Genera of Hyhotince. 



1. Anal cell longer than the second basal cell. 2 

 Anal cell shorter than the second basal cell. 3 



2. Discal cell emitting three veins; radial vein closely 



approximated to the cubital, and extending almost 

 to the wing-tip. Ironomyia, Gen. nov. 



3 Discal cell wanting; first and second basal cells of 

 equal length ; eyes in female widely separated. 



Sciadocera, Gen. nov, 



51. I R o N o M Y I A, Gen. nov. (Fig. 39.) 



Wings with the anal cell longer than the second basal 

 cell; discal cell with three issuing veinlets; radial and 

 cubital veins closely approximated and of almost equal 

 length. 



