Adjustment of colour in various pupie, etc. 899 



Experiments. 



30. Yellow paper.tlirough 

 glass. 



31. Yellow paper, on 

 glass. 



Decrees of Pupal Colour. 



£2, 



Light (3) 



32. Orange leno bag. 



33. Orange-yellow com- 

 partment ; miseellaneou:' 

 pupae. 



34. Orange compartment, 

 near leno and dirty white 

 paint. 



Anterior scatter- 

 ed group, many 

 close to clear glass 

 front. 



11 



11 



1 13 



14 



Rtinarks. 



The (3 a) is transparent 

 greenish-white, and transi- 

 tional to (3 b). The lattt-r 

 deep green with much 

 pigment for this degree. 



Like the (3 a) described 

 above and, like it, very 

 pale and pigmentless. 



Two pale, nine deep green 

 One of former fixed to ! 

 leaf. Seven with 

 little jiigment and 

 others not very dark. 



very 

 the 



Another pupa dead. One 

 pale, two intermediate, five 

 deep green. All very pig- 

 msntless.except three of lat- 

 ter (not very dark), and one 

 remarkable deep green form 

 with the pigment of a (2) 

 and a small distinct wiug- 

 mark ; also present on two 

 of the last-mentioned set of 

 three. 



(3 a) very pale and pig- 

 mentless with 710 wing- 

 mark. (3 h) one pale, two 

 deep green, all durk pig- 

 mented ; faint trace of 

 wing-mark on one. 



Five pupse jiarallel to 

 glass front (four close to 

 it), one with tail, seven 

 with headfpoin ting directly 

 to light : one with head to 

 light, but body line not 

 direct (viz. forming angle 

 of about 45° with front). 

 (3 a) very pale, trans- 

 parent, and pigmentless, 

 much more so than any on 

 the black side of same 

 sheet. One (3 h) pale 



