398 



STtJDlES In AUSTRALIAN *IECOPTERA, ii. 



only a weak branch into R2+35 and passes on into R44-5. Branches 

 of about equal strength are given off to both R4 and Rg. The 

 former passes up along a cross- vein into R^, while the latter per- 

 forms a similar evolution nearer to the apex of the wing, ending 

 up in R4. 



lA Cuj Ca, M4b l^+a 



w 



• Text-fii 

 ings of a pupa of Ghorista auKtralis 



King, 9, freshly-tunied; ( x21). 

 Senii-diagranimatic, the tracheation represented by continuous black 

 lines, the imaginal venation b^^ dotted lines; k, the point at which 

 Cuj meets a short cross-vein from M, eventually fusing with M in the 

 imaginal venation : ^[t, median tiacliea; Rf^ radial trachea. For rest 

 of lettering, see p. 408. 



The second main trachea of the wing is of smaller calibre, and 

 belongs to the cubito-anal group. It enters the wing-rudiment 

 along the media. In the forewing, it is quite unbranched, and 

 passes finally into M3 in an almost straight line. In the hind- 

 wing, it gives off short branches to the cubital fork and also to 

 M3_^4, and its distal end passes into a cross-vein below M.^. 



A second pupa was examined and its wings photographed, but 

 the negatives obtained were not very satisfactor3\ In this case, 



