818 DIPTERA OF AUSTRALIA 



long, nearly three times the length of the second joint ; following 

 joints rapidly diminishing in length and becoming more perfectly 

 flask-shaped, the terminal joints very small, ovate ; all the flagellar 

 joints with long fi.ne verticillate hairs except on their narrowed 

 anterior portion (PI. xxiv., fig. 56). Thorax brown, very slightly 

 shining ; pleurae and pectus sometimes paler. Halteres light 

 brownish-grey, the base of stem ochreous. Abdomen dusky brown, 

 clothed with brown hairs ; genitalia testaceous-brown or darker, 

 densely haired. Legs longer than in P. tenuicornis, sooty brown, 

 greyish-brown when viewed in a certain light ; the coxae and 

 extreme base of femora pale brown. Wings hyaline, the hairs along 

 the veins long and brown; veins pale; cilia along the posterior 

 margin very long. Auxiliary vein reaching the costa a short 

 distance beyond marginal cross- vein ; the latter near base of first 

 sub-marginal cell ; base of first sub-marginal cell obtuse, situated 

 beyond that of the second sub-marginal a distance almost equal 

 to length of great cross-vein ; anterior branch of fourth longi- 

 tudinal vein originating before the inner end of first posterior cell 

 a distance equal to about twice the length of great cross-vein, 

 forked considerably before its middle ; discal cell usually open,"^ 

 coalescent with the third posterior cell ; great cross-vein opposite 

 or a little beyond base of third posterior cell ; sixth longitudinal 

 vein arcuated at the tip ; seventh straight, terminating in posterior 

 margin opposite origin of praefurca. 



Hah. — Sydney and Berowra, N.S.W. Five specimens (Masters 

 and Skuse). 



Ohs. — Readily distinguished from the last by the character of 

 the antennal joints. 



Genus 14. Erioptera, Meigen, 



Erioptera, Meig,, 111. Mag. II. p. 262, 1803; Syst. Beschr. I. 

 p. 108, 1818 ; Macquart, S. a B. I. p. 109, 1834; Zetterstedt, F. 

 Lapp. 1840; Dipt. Scand. X., 1851; Walker, Ins. Brit. III., 



* I have found it closed in only one specimen. 



