Adjustment of colour in various pup^, etc. 383 



(5) LIGHT-COLOURED DRY STEMS (Upilohium. Mrsutuoil). 



1 pupa (dead and discoloured) was probably light grey 



{2 a). 

 1 pupa (dead, or perhaps discoloured, preparatory to 



emergence) was probably a yelloiv-grecn form (1). 



2 



(6) DEAD, LIGHT BROWN REEDS. 



Both pupaj had become greatly discoloured, and one at 

 least was dead. The position of one was uncertain; the 

 other had apparently been a ycllovj-grccn form (1). 



(7) DULL GREEN REEDS. 



1 pupa, fixed to reed, was intermediate between dark 



and light grey (2 a, b). 

 1 pupa, fixed to reed, was intermediate between grey 



and yellow-green (1,2). 

 2 



(8) OATSTRAW (bright GOLDEN YELLOW). 



1 pupa, fixed to straw, was a light grey form (2 a), with 

 some tendency towards yellow-green. 



1 pupa, fixed to straw (dead and discoloured) was of 

 uncertain position, but clearly it had not been 

 highly pigmented. 



2 



(9) DUTCH "GOLD" (EMBOSSED). 



1 pupa, fixed to " gold," wa.s intermediate between 



dark and light grey (2 a,&),with a slight tendency 



towards the ycllow-grecn form (1), 

 1 pupa, fixed to '' gold " (dead), was intermediate 



between dark and liglit yellow-green (1 a, h). 

 2 



(10) GREEN PAPER, (a) In strong light, 



1 pupa was d,ark yellow-green (16). 

 1 pupa was light grey (2 a). 



1 pupa was dead and of uncertain position, but pro- 

 bably it had never been strongly pigmented. 



