870 DIPTERA OF AUSTRALIA, 



cell ; second fascia of about equal width to first, from origin 

 of second longitudinal to tip of seventh longitudinal, subject to 

 more or less complete interruptions in both the basal cells and at 

 posterior margin, and connected to third fascia by a vitta moreor less 

 completely filling upper half of intervening portion of second basal 

 cell ; third fascia a little broader than the others, extending from 

 costa, at stigma, across discal cell, to lower extremity of great 

 cross-vein ; the centre of discal cell usually clear. Auxiliary vein 

 reaching costa opposite or somewhat beyond inner end of second 

 sub-marginal cell (sometimes opposite inner end of first sub-mar- 

 ginal) ; sub-costal cross-vein near its tip ; marginal cross- vein 

 indistinct, about twice its length distant from tip of first longi- 

 tudinal and joining anterior branch of second longitudinal vein at 

 the middle ; praefurca nearly straight, moderately long, arcuated 

 or even angulated at its origin ; petiole of first sub-marginal cell 

 very short, sometimes less than length of marginal cross-vein ; 

 anterior branch of second longitudinal vein considerably arcuated 

 at its base, about half the length of posterior branch, reaching 

 costa beyond tip of first longitudinal a distance equal to about 

 half the length of stigma ; posterior branch arcuated slightly 

 upwards at the extreme tip ; second posterior cell somewhat more 

 than half the length of third posterior ; discal cell longer than 

 wide, the great cross-vein opposite its middle ; sixth longitudinal 

 vein slightly and seventh distinctly sinuated. 



Hab. — Apparently generally distributed in Australia, Common. 



Var. /3. — Two $ specimens have the apex of wings only slightly 

 infuscated ; the forceps and last two abdominal segments black ; 

 and the tibise brown with the base and apical half black. 



Hah. — Tasmania (Masters). 



Var. y, — A 9 specimen has only the first and last abdominal 

 segments black, and black tibise. 



Hah.— King George's Sound, Western Australia (Masters). 



Var. d. — A (J specimen has the forceps and next preceding 

 segment black, and the hind tibise brown at base and apex. 



