DESORIPTIONS OF AUSTKALIAN ^SCHNIN^. 15 



distal from subnodns. Membranule small, narrow. Pterostio-ma narrow, 

 fairly long. On all fonr wings six conspicuous costal spots, transparent 

 ruby-red in colour, edged with blackish, as follows : — a basal spot or streak, 

 extending to first antenodal, in costal space ; a small spot on Sc halfway to 

 nodus ; a larger nodal spot ; a medium-sized spot on i?i halfway between 

 nodus and pterostigma ; a spot below basal half of pterostigma ; and an 

 apical spot or patch. Besides these, in fore-wings of ? , and often also in $ , 

 there is a small spot, often nearly a point, on Sc between the nodal spot and 

 the one preceding it. Spots of $ much larger than those of $ , and some- 

 times more or less confluent. Anal border of $ excavated. 



Eyes touching for a short space. Front broad and high ; labium broad. 

 Thorax with three pairs of straight bands, one pair dorsal, two lateral. Legs 

 of medium size, tibise with two rows of cilia, but the inner row on protibise 

 more numerous and more closely set than the others. Abdomen cylindrical, 

 long and slender in $ , shorter and stouter in ? . Auricles very laro-e in $ , 

 fairly large in ? . Genital fossa of (^ widely open anteriorly, narrowed 

 posteriorly by the overlapping margins of the second tergite, which project 

 into two conspicuous pointed prominences ; penis ending in two very lono- 

 thin curved filaments. No conspicuous dilatations of tergal margins under- 

 neath 7 or 8. Superior appendages of cj short, inferior much longer, trifid. 



Type : Pliyllopetalia patricia, Tillyard. 



Habitat. Blue Mountains, N.S.W. 



This genus is very closely related to the Petalia-gvow]) of genera which 

 inhabits Chili, y'lz.:— Pet alia, Phyllnpetalia, and Hi/popetalia. The following- 

 points of difference should be noted : — 



1. Austropetalia differs from PetaJia by (a) the greater number of spots 

 on the wings (six instead of four), {Ji) the form of the pterostigma, iind 

 (c) the ciliation of the protibife. 



2. From PJiyllopetaUa it differs by (a) possessing six wing-spots instead of 

 five, (1>) its larger membranule, (c) the different form of the terg;d margins 

 in 7 and 8. 



3. From Hypopetalia it differs by the possession of (a) two-celled triangles 

 (three-celled in Hi/popetalia), (h) free subtriangles (three-celled in Hiipo- 

 2:)etalia), and (c) the larger membranule. 



From all three genera Austropetalia differs by (a) the ruby-red coloration 

 of its wing-spots, (A) its broader labium, (c) the form of the appendages of 

 the cJ , the superior being straighter and the inferior longer by comparison 

 than thosH of the Chilian genera. These differences, coupled with the very 

 distinct habitat, justify the proposition of this new genus. It was, however, 

 impossible to propose it in 'my former paper, since the male had not then 

 been discovered. I now add a description of the type- male of the only 

 known species. 



