822 



AUSTRALIAN MEGALOPTERA OR ALDER-FLlES, 



about ten veinlets in costal space, hindwing with about six. In 

 forewing, Cu^ unites with M for a space, the short basal free 

 portion of Cu^ resembling an oblique cross-vein. The fused por- 

 tion, M + Cui, is continued by Cu^ itself as a stout vein in line 

 with it, whereas M departs from it anteriorly at a sharp angle. 

 In hindwing, Cu remains quite distinct from M. In forewing, 

 the full complement of branches is present for both Rs and M; 

 in hindwing, there is one less for M, M3_|.4 remaining unbranched. 

 Neither R2 J^oi' 1^3 is secondarily forked, as is the case with one 

 or both in Sialis. 



Genotype, Aiistrosialis Ignicollis, n sp. 



Hab. — Tasmania. 



M3>4 

 Text-fig. 1. 

 Wings oi Anstrosicdis ignicoUis, n.g. et sp. In forewing, M + Cui is the 

 fused portion of M and Cu,. Rest of notation as usual in the 

 Comstock-Needham system. The small forking distallj' on R^ does 

 not occur on the left forewing. (Hindwing 12 mm. long). 



The black and orange colouration is also that of P^'otosialis, 

 to which the Chilian species belongs. It is also interesting to 

 note that, in the number of its branches to Rs and M, the new 



