ii: 



AUSTRALIAN RHYPUIDA': AND LEPTIDJE 



(DIPTERA ). 



By G. H. Hardy. 



Plate XXVII. 



(Received 24th June, 1919. Read 1st September. 1919.) 



Owing to the discovei-y that the well known lihyphim 

 hrii'is, Walker, is a synonym ol" Macquart's Jf. dubivf:, 

 which was misplaced by the latter author with doubt in 

 the genus Chrysopi/ns (Lfptifla), and as Walkers name 

 i.s now generally used in literature, it is necessary tliat an 

 early notification of this change of name be published. 



This opportunity is taken to revise the Rhyphida , 

 which family contains but one known species in AustraJia. 



Fam. RHYPHID^: 



This family may be descril)id as follows: — Slender 

 insects with filiform antenna? containing 16 joints, the two 

 basal differentiated, the flagelhiin (3-16) tapenng apic- 

 ally; with two ba.sal and a dis( oidal cell complete, anal 

 cell widely open, all veins simjile, 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 rendei-ed from Kcrtcsz' key in Term. 

 Fuz. XXV., page A, 1902: — 



Key fi) tlif (teverii of Rhyjthidcr. 

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



Rhyjdnix. 

 Radial vein straight, closing marginal cell by meeting 

 the subcosta at cost a. 2. 



2 Radial vein rising from cubital anterior to the trans- 

 verse cross-vein, almost opposite the base of the 

 discoidal cell. Eyes bare. Olhior/ outer. 



Radial vein rising from the cubital at the transverse 

 cross vein. Eyes hairy. Lobingaster. 



Genus R/iyp/ui.<, Latr., has a wide distribution, occur- 

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

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

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

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



