408 STUDIES IN AUSTRALIAN MECOPTERA, ii. 



EXPLANATION OF PLATE XLIII. 



Fitf. I. — Wings of a pupa of Chorista aujif m/ is Klu^r, 9, three cla3's old; 

 (xl8). 



Fig.2. — Basal part of forewing of same; ( x 48). Note the Alar Trunk- 

 Trachea at extreme base of wing, giving off the two wing-traehea?. 



Fig.3. — Basal part of hindwing of same; ( x 32). 



(Photomicrographs of tlie freshly dissected wings in water). 



Explanation of CoMSTOfK-NEEDHv^M Venational Notation, as t^sed 

 IN the Text-fk hires. 



lA, 2A, 3 A, the three anal veins — C, eosta — Cu, cubitus; Cuj its upper, 

 and Cu2 its lower branch — ruf, cubital fork— ^/V, frenulum — M, media; 

 Mj, M„, M3, M4, its four branches, the last of which divides into ^1^ and 

 M4b in the forewing —;??/, median fork — pf, pterostigma — ptf, pterostig- 

 matic furrow — R, radius, dividing into Rj, its main stem, and Rs, the 

 radial sector; this latter has four branches. R.,, R„. R^. and Rg — /•/", radial 

 fork — rf, fork of radial sector — He, subcosta. 



