117 



AUSTRALIAN BHYPHIDJE AND LEPTIDjE 



(DIPTEUA ). 



By G. H. Hardy. 



Plate XXVII. 



(Received 24th Jime, 1919. Read 1st September, 1919.> 



Owing to the discover}' that the well known Mliyphus 

 hrevis, Walker, is a synonym of Macquarb's R. duhius, 

 which was misplaced by the latter author with doubt in 

 the genus Chrysopilus (Leptidce), and ae Walker's name 

 is now generally used in literature, it is necessary that ain 

 early notification of this change of name be published. 



This opportiunity is taken to revise the Ehyphidct, 

 which family con^ains but one known species in Australia. 



Fam. RHYPHID.^ 



This family may be described a>s follows : — Slender- 

 insects with filiform antennse containing 16 joints, the two 

 basal differentiated, the flagellum (3-16) tapering apic- 

 ally; with two basal and & discoidal cell complete, anal 

 cell widely open, all veins simple, not forked ; five pos- 

 terior veins; macrotrichia (at least in the Australian spe- 

 cies) on the membrane of the wing. Abdomen with 7 

 segments. 



The following is rendered from Kertesz' key in Term.. 

 Fuz. XXV., page 4, 1902: — 



Key to the Genera of Rhyphidce.. 

 1. Radial vein curved, marginal cell open on border. 



Rhyphus. 

 Radial vein straight, closiing marginal cell by meeting 

 the S'ubcosta at costa. 2. 



2 Radial vein rising from cubital anterior to the trans- 

 verse cross-vein, almost opposite the base of t^he 

 discoidal cell. Eyes bare. Olbiogaster. 



Radial vein rising from the cubital at the transverse 

 cross vein. Eyes hairy. Lobiogaster.^ 



Genus Rhyjjhus, Latr., has a wide distribution, occur- 

 ring in Europe, Africa, India, Java., Australia, New Zea- 

 land, and America (North and South) ; genus Olhiogaster, 

 Ost-Sack., is only known from the Southern parts of North 

 America; and genus Lobiogaiiter. Phil., occurs in Chili. 



