112 R. W. CROSSKEY 
of hind metatarsus very long and conspicuous. Hind tibia with a secondary 
fringe of irregular semi-erect setulae ae the a surface in addition to the normal 
ad fringe . : P. funebris 
— Surstyli of 3 eee mot as in Text -fig. 103, Gates surface extensively hairy and 
only the tip bare, no definite anterobasal swelling. Setulae of ad fringe of meta- 
tarsus weak and inconspicuous or longer than metatarsal diameter. Hind tibia 
with or without a distinct secondary a fringe of semi-erect setulae in addition to 
main ad fringe . 10 
to Wings without the usual eae basal daake “Ecr VSantyi of 3 genitalia as in tee 
fig.97. Hind tibia without a secondary a fringe in addition to the normal ad fringe 
P. minuta 
— Wings with the usual sub-basal dark brown mark. Surstyli of ¢ genitalia of slightly 
different form (Text-figs 98, 104, 108). Hind tibia usually with a row of distinct 
small semi-erect setulae along its length which form a secondary a fringe in 
addition to the usual ad fringe (setulae usually rather irregular) i II 
Ir Surstyli of f genitalia rather short and broad in profile, without noticeable coreateen 
(as in Text-figs 98 and 104) . 12 
— Surstyli of g genitalia longer and more Seales in ae and distinctly comeeel 
(Text-fig. 108) . : . P. regina 
12 Hind metatarsus with ae setulae of the 75 Tow w extremely long and conspicuous, 
much longer than metatarsal diameter. ¢ cerci and surstyli as in Text-fig. 104 
P. deserta 
-— Hind metatarsus with setulae of the ad row short and inconspicuous, not longer than 
metatarsal diameter. ¢ cerci and surstyli as in Text-fig. 98 . é 5 P. arida 
13 Hind femur with pv setae along the basal half. Hind femur with av setae of 
irregular size along its length. Wing without sub-basal dark mark. ¢ cerci and 
surstyli as in Text-fig. 107. [Western Australia] . . P. cygnus 
— Hind femur with pv setae on the middle third of its length, none on the basal part. 
Hind femur either with irregular av setae and strong hairs along its whole length 
or with av setae confined to apical half. Wings with the usualsub-basal dark mark. 
¢ cerci and surstyli as in Text-fig. 99 or Text-fig. 102. [Victoria to Queensland] 14 
14 Hind femur with the pv setae very long and strong, very much longer than diameter 
of femur. Hind femur with the av setae and strong hairs present all along its 
length. Surstyli and cerci of $ genitalia as in Text-fig. 99, seghihe broad and 
truncate and cerci not recurved at tips . ; P. fullerae 
- Hind femur with the pu setae weak and few (usually =e 5 or ao sometimes 
only one) and only about as long as femoral diameter. Hind femur with av setae 
confined to apical half. Surstyli and cerci of ¢ genitalia as in Text-fig. 102, 
surstyli blade-like with acuminate apices and cerci slightly but distinctly recurved 
at tips : : > : : . : : - : : P. victoriae 
Genus CHETOGASTER Macquart 
Chetogastey Macquart, 1851 : 198 (225). Type-species: Chetogaster violacea Macquart, 1851, 
by monotypy. 
Codium Enderlein, 1936 : 417. Type-species: Rutilia oblonga Macquart sensu Enderlein (mis- 
identification) [=Chetogaster violacea Macquart, 1851), by original designation. 
Chaetogaster : incorrect subsequent spelling of Chetogaster Macquart, without status in nomen- 
clature. 
Diacnosis. Facial carina elongate subfusiform or slightly flattened above and tapering 
ventrally to a sharp narrow ridge, always rather narrow. Epistome very strongly prominent, 
subnasute, face in profile deeply concave between epistome and carina. Head of § not holoptic, 
frons very much wider than facial carina, upper eye facets not enlarged. Parafacials bare. 
