TJJNIOCAMPA OPIMA. 55 



with black heads, becoming gradually by the fifth day 

 of a more dirty pale olive-greenish tint with blackish - 

 brown head and small plate behind it. By the 5th of 

 May they had moulted, their dark heads were gone, 

 and they had become of a very pale coloured watery- 

 greenish tint. 



Their food was osier, which they seemed to prefer 

 to Rosa spinosissima or sallow, both of which were at 

 first given them on account of their coast sand-hill 

 origin. On the 7th May they had spun a quantity of 

 fine web amongst the osier leaves. On the 9th of 

 May the next moult gave them a dark blackish-grey 

 or greenish coat with the lines greyish or whitish -grey, 

 the tubercular black dots ringed with the same ; head 

 and plate pale brownish-green, spotted with darker 

 brown. On May 15th the body was grass-green, with 

 lines of pale grey ; head and second segment dotted 

 with black. By the 25th May they had become nearly 

 three-quarters of an inch long, of rather a deep dull 

 green on the back and sides, very finely freckled with 

 blackish ; the subspiracular stripe paler yellowish- 

 green, bordered above by a stripe of thickly freckled 

 or of blackish atoms ; the dorsal line a little paler 

 than the ground colour, and the subdorsal can also be 

 faintly traced ; the head pale brownish-green. 



These all throve well up to the 5th of June, but 

 then began to sicken and die off, all being dead by 

 the 20th. (W. B., 1872, Note Book I, 166). 



Eggs from Miss Johnson, of Liverpool. Eggs 

 turned blackish, laid in a heap together on the 

 tops of small stems. They hatched April 24th 

 and 25th, 1880. 



The young larvae were dingy slaty-green, with black 

 head and plate ; growing gradually paler and paler. 



First moult May 1 st ; larvae very pale greenish, 

 head green ; a small black plate on the second 

 segment. 



Second moult May 6th ; larvae dingy dull bluish- 

 green, with paler dorsal, subdorsal, and spiracular 



