1 7 2 



ANIMAL LIFE 



that fit it rather tor drifting upon the open sea than 

 for arboreal life. Upon close examination the absence 

 of colour is seen to result not from absence of pigment 



hep -rurp, heart 





^ 



LINED VARJET 



Fig. 29. — Illustrating the Development of Colour-pattern in Hippolylc. 

 The uppermost figure represents the free-swimming larva. The 

 middle figure the adolescent stage, when it settles on its weed The 

 bottom figure represents one of the man)- colour-varieties. The black 

 spots represent the chrornatophores (caudal, visceral, and neural). 



but from its poverty ; and if a sufficiently strong 

 magnifying power be used, a whitish or greenish tint 

 will be observed, in this respect till families of this 



