THE CANADIAN ENTOMOLOGIST 



41 



Tasmanoperla diversipes, n. sp. 



(Text Fig. 3). 



No description of this species appears ever to have been published, although 

 the name is mentioned in literature by Walker and others. It would seem 

 probable that Westwood had made a MS description, from which the name was 

 taken and used in print, without any corresponding description. The species 

 is closely allied to Eiisthenia thalia Newm., 1839, from which it may be dis- 

 tinguished as follows: — 



Fig. 3. — Venation of Tasmanoperla diversipes n. g. et. sp.; family Austroperlidae. 



Wing-veins brown, the costal veinlets of the forewing, and the distal ends 

 of the main veins of both wings around the apices marked with small dark 

 patches. Forewings very irregularly irrorated with brown, but a clear, un- 

 shaded patch of irregular shape is left at one-third from apex. (£. thalia Newm. 

 has the forewing of a dark smoky colour, with a very clear and more regular, 

 somewhat cream-coloured patch left unshaded in about the same position). 

 Legs black, with rich brown marks at the bases of the femora and tibia?; the 

 brown on the hind femora occupies^ the basal half. 



As in E. thalia, the wings are slightly shorter than the abdomen, the cerci 

 rather short, the antennae shorter than the forewing, and the prothorax abso- 

 lutely square in shape. 



Type. — Holotype female, in Coll. Tillyard. 



Locality. — Mount Wellington, Tasmania, Jan. 31st, 1917. 



This species is made the type of the genus Tasmanoperla as it is the one 

 which I have studied and figured. I have, however, seen specimens of E. 

 thaliaNewm., and there can be no doubt that it also must be placed in this 

 genus. 



