430 STUDIES IN AUSTRALIAN NEUROPTERA, viii., 



in my collection also two males, closely resembling the type, from 

 Ulverstone, Tas., taken by Mr. A. M. Lea, and received in 

 exchange from Mr. G. H. Hardy. 



This species may have anything from two to four apparent 

 radial sectors in forewing. The type male has only two in each 

 forewing. Text-fig. 1, j-k, show the interesting conditions of the 

 radial sectors in the two forewings of the second male from Vic- 

 toria; while Text-fig-1, l-m, show the even more striking condi- 

 tions in the allotype female. 



Heterithone megacerca, n.sp. (Text-fig. 1, fh). 



Rhone fusca Till, (nee Newm.), These Proceedings, 1916, xli., 

 Part 2, p. 27 9, PL xii., figs. 7-9. 



g. Total length, 25 mm.; abdomen, 17 mm.; forewing, 25 mm.; 

 hinduring, 22*5 mm.; expanse, 53 mm. 



This very striking species has a close general resemhlance to 

 Ithone fusca Newm., with which it has hitherto been confounded. 

 The principal differences are as follows: — 



The general build is more robust, the abdomen stouter and 

 longer, apparently without any definite pattern, the antennae 

 shorter and somewhat stouter, the wings very distinctly wider 

 and more broadly rounded at the tips. In the forewings, besides 

 the presence of more than one apparent radial sector, the costal 

 margin is thickened and darkened, and both R, and Cuj are very 

 strong, darkened veins, much more prominently convex than in 

 /. fusca. Also the costal space is much wider, and its veinlets 

 tend to fork considerably, while a few of them are actually 

 connected by cross-veinlets, as in the genus Vamia (see Text-fig. 

 \,fh). The appendages of the male, which are of great size and 

 extraordinary shape, have been already described and figured by 

 me as belonging to /. fusca, and it is only here necessary to refer 

 to those figures (9, PI. xii., figs.7-9). 



The male of //. megacerca has the size and build of a female of 

 /. fusca. The female is unknown to me, but should be cones 

 pondingly larger and more heavily built than the male. Mr. 

 Campion (antea, p.419) states that there is a female of this 

 species in the British Museum Collection; but, at the time he 



