BY K. J. TlLLYARD. 



823 



genus offers an exact parallel to the oldest Trichoptera, in which 

 Ms^-i is always a simple vein in the hind wing. 



AusTROSiALis iGNicoLLis, n.sp. (Text-figs. 1-2). 



Total length, 8 mm.; abdomen, 4 mm.; foreiving, 14 mm.; hind- 

 tving, 12 mm.; exjyanse, 28-5 mm. 



Head shining black, smooth anteriorly, with a shallow mid- 

 dorsal depression; the large occipital 

 region curiously sculptured, with raised 

 longitudinal and circular areas, ar- 

 ranged as shown in Text-fig. 2. Aii- 

 tennoi with large, stout basal joint, 

 black ; the rest missing. Mandibles 

 black, tipped with orange-red. 



Thorax: prothovcix bright orange- 

 red, flattened cylindrical in shape, with 

 slightly indicated mid-dorsal groove; 

 less than half as long as wide, the 

 width being slightly less than that of 

 the occiput. Pterothorax jet black. 

 Legs black, of medium length and slenderness. 



Abdomen [shrivelled] dull blackish. 



Type, in Coll. Tillyard. 



Hab. — MdLv'ia, Island, East Coast of Tasmania. A unique 

 specimen, probably a female, taken on Dec. 29th, 1915, by Mr. 



G. H. Hardy. 



• 



Stenosialis, n.g. (Text-fig.3). 



Closely related to Protosialis Weele. General colouration 

 brown, with pale smoky-brown wings. Forewing with narrow 

 costal space containing only four veinlets, the hindwing with 

 only two. The arrangement of the veins M and Cu is the same 

 as described for Austrosialis above, and the number of branches 



The cross- 



Text-tig.2. 



for the veins Rs and M is the same as in that genus 



* Head and prothorax of Austrosialis ignicoUis, n.g. et sp., to show 

 sculpture of the occiput; the light arranged so as to fall nearl^^ horizon- 

 tally; { X 15). 



