G32 



THE PANORPOID COMPLEX, 111., 



(1) The pupal wings are holotracheate . There is a tendency 

 for the branches of all the principal tracheae to be split back to- 

 wards the base of the wing, so that the point of origin of any 

 given branch trachea is nearer to the base than the point of 

 origin of the corresponding vein in the imaginal wing. 



(2) Se and E 1 are distally forked. These archaic characters 

 are preserved more or less fully in various Homoneura. 



R 





Text-Fig.75. 

 Wings of the Archetype of the Order Lepidoptera. Lettering as on 

 p.535. 



(3) The branches of Ks are reduced to four in number, and 

 the apical forks so formed are destitute of cross- veins. 



(4) The dichotomous manner of branching of these forks is 

 retained, Avith the fork of ^^ +5 placed nearer to the base of the 

 wing than is that of R 2 +3- 



(5) There is no wing-spot between R 4 and R 5 . 



(6) The eubito-median Y-vein is completely formed, on the 

 same lines as in Belmontia. 



(7) Pore and hindwings agree in the manner of branching of 

 ^Ii_t, In both wings, this vein has four branches, arranged 

 dichotomouslv, but M, fuses distallv with Cv, forminsr the 



