STUDIES OF VARIATION IN INSECTS 



217 



degree called " fair," " good " or " marked " (fig. 7) ; i shows 

 a complete new interpolated cell (fig. 8). 



r; 



FIG. 8. Hind wings of honey bee (drone) showing interpolation of complete 

 cells; A, complete cell at 3 ; B, complete cell at 2 ; C, complete cell at i ; D, 

 complete cells at i and 3 ; E and F, complete cell formed by meeting of spurs 

 i> 3- 



FIG. 9. Fore and hind wings of honey bee (worker) showing normal vena- 

 tion. 



A lot of 300 workers from the same hive from which the 

 above lot of drones was taken was examined for variation in 

 the character of the venation of the wings. Of the 300 left fore 

 wings : 288 show no variation (fig. 9) ; 2 show var. i incomplete ; 



