AUSTRALIAN BLOOD SUCKING FLIES. 241 



Face grey; front dark brown. Proboscis black. Palpi 

 dark brown. Antennae black; basal joints short, third 

 joint broadened, arista about as long as rest of antenna, 

 the whole antenna about the same length as the arista in 

 S. longicornis. Thorax dark brown with a greyish bloom 

 at apex and on sides, with three darker longitudinal lines, 

 the median notreaching base. Scutellum brown. Abdominal 

 segments dark brown with moderately broad, greyish apical 

 bands, somewhat undulate but not interrupted in the 

 middle, basal segment almost entirely greyish, the two 

 apical segments greyish with a median basal dark spot. 

 Venter and sides dark grey. Legs bicolorous; tibiae light 

 yellowish-brown, apex darker; tarsi with first segment 

 yellowish-brown, darker at apex, other joints dark. Wings 

 with characteristic venation; third veinlet constantly 

 present, moderately long, reaching about one-third of the 

 way to the costal margin; anal cell closed immediately 

 before margin; hyaline, veins and stigma dark, a very 

 faint infuscation traceable along the course of the veins in 

 some specimens. Length 4 mm.; antennae *87 mm.; third 

 joint '26 x *19 mm.; arista *43 mm. 



Hab. New South Wales, Hawkesbury River (March), 

 Mount Irvine (January), Wentworth Falls (March). 



Allied to S. longicornis, but with shorter antennae and 

 shorter arista; the third joint is also differently shaped. 

 This species may be separated from the other members of 

 the genus by the colour of the legs. 



Several specimens without locality label and in a bad 

 condition are in the collection — some of these may be from 

 Middle Harbour or Helensburgh, but I think they are all 

 Hawkesbury River specimens. The Blue Mountain speci- 

 mens are also in bad condition, having turned black, but I 

 have no doubt they are referable to this species. The 

 slight infuscation along the veins is very faint and difficult 



P— August 4. 1915. 



