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STUDIES IN AUSTRALIAN NEUROPTERA, Vll., 



pupal wing-sheaths. Consequently, as in the case of the Stone- 

 flies or Perlaria, the wings, when finally withdrawn, have the 

 distal portion bent at an angle to the basal portion, as sliown 

 in Text-fig.ll, d. This applies more to the forewing than to the 

 hind, which becomes freed with less difficulty. 



e. 



Text-fig.ll. 

 Emergence of the imago of Ps. ehyans {Gu^r.). a, Pupa just before meta- 

 morphosis, 5.36 p.m. h, Imago emerging, 5.40 p.m. c. Imago freed 

 from pupal skin, 5 42 p.m. d, Imago expanding its wings, 5.47 p.m. 

 e, The same at 5.49 p.m. /, Imago resting with wings fully expanded, 

 6.8 p.m. (Drawn from sketches made while watching the actual 

 emergence on Dec. Ist, 1915; d, dorsal view, the rest lateral). 



As soon as the imago was quite free, it climbed upwards 

 further away from the pupal skin, the latter being left clinging 

 to the blotting-paper, as shown in Text-fig.ll, c. Having taken 

 up a position well above the pupal skin, the imago remained 

 stationary with its wings arched strongly outwards, the forewing 



