Figs. 35 to 45 Paths followed by Zeuzera larvae in response to monochro- 

 matic lights of equal intensity, as described on pages 496 to 500 inclusive. The 

 approximate length of the larvae as well as their position and direction of travel 

 is indicated by the arrows. Action of lights successive in figures 35, 44 A and 45 

 -1 ; in all other cases simultaneous. 

 Fig. 35 A Blue alone at left Fig. 37 Red-red 



Fig. 35 B Blue alone at right Fig. 38 Blue-green 



Fig. 36 Blue-blue Fig. 39 Green-blue 



498 



