118 AUSTRALIAN RHYPHIO.E AND LEPTIDyE (dIPTEKA), 



G-enus Rhyphus, Latreille. 

 Latr. Hist. Nat. Cvust. et Ins. xiv. 291., 1804. 



Kertesiz. Cat. Dipt. Vol. 1., pg. 304. 1902 (which sec for 

 synonymy). 



Characters as described under the family ; radial vein 

 curved, eyes in 9 separate, in $ contiguous, bare. Ab- 

 domen cylindrical, elongate tapering. Legs simple, slen- 

 der, spines at most only indicated by strong hairs on the 

 posterior tibise ; anterior tibia? with one, intermediate and 

 posterior tibiae with two apical spurs. 



J^/ii/j/fnis (luJjitis, Macc[. 



(lirysuptJiis diihiuH, Macq., Dipt. Exot. suppl. 4, pg 104, 

 tab. 9, fig. 18, 1850. 



IDiyplivs. hrevix, Walk., Ins. Saund. Dipt, i., pg. 449, 1856. 



Macquarts so called ('Iirysopilus //itfi/iis is a Rliifphid. 

 The description from a mutilated specimen and the figure 

 of the wing show conspicuous evidence that this is the case, 

 since the wing markings and the wide anal cell agree with 

 those of tne common tlhyphid known as R. Jircvis. The 

 figure shows the cubital vein forked, but the desciiption 

 would lead one to suppose otherwise, as only one sub- 

 marginal cell is mentioned; indeed, such discrepancies are 

 not unusual in Macquarts work. The type specimen is 

 from East Avistralia, and Walker's type is Tasmaniau ; a 

 comparison of Sydney and Tasmanian specimens shows 

 them to be identical. 



Easily recognised by its brownish colour, wings much 

 spotted and macrotrichia on the membrane of the wing 

 as well as on the veins. Dr. Tillyard records these macro- 

 trichia in P.L.S. N.S.W. xliii., pp. 627-641, text figures 

 aud plate, 1918. 



Yellowish brown. Eyes bare, black ; ocellar tubercle 

 black ; flagellum of antennse black. Thorax with three 

 broad black stripes, the central strijie leaching neck. Ab- 

 domen more or lessi stained black. Thorax and scutellum 

 have bristles, or hair-like bristles which are not always 

 easy to differentiate. The following, according to their 

 position and size, are undoubtedly bristles : — 2 dorso- 

 scutellar, 4 notoplural, 1 supra-alar, 2 interalar ; dorso- 

 central and acrostichal bristles indicated by conspicuous 

 bristles posteriorly which become more hair-like anterior- 

 ly, and other anterior hair-like bristles can be traced on 

 the thorax. Wings hyaline, slightly fuscous at base, 

 fuscous spots at humeral and median cross veins, and dis- 

 tinctly irregular fuscous bands (very spot like) from costa; 



