846 Professor E. B. Poulton on eolour-relation 



shades of brown. It was re-fed on April 16th, 21st (mark- 

 ings of two shades of pale brown), and 23rd, and was 

 always found on sticks with appearance unchanged. 



A'pril 26th. Re-fed. On stick. The larva was now 

 white with grey and brownish markings. On May 3rd it 

 was i-e-fed, the appearance being unchanged. 



May nil. The larva had changed skin ; the white parts 

 had become yellower. It was re-fed on May 11th, I7th, 

 and 22nd, and was noted as at rest on stick on the 11th 

 and 22nd. It remained to the end of a yellowish-white 

 with markings of grey and brown. 



May 25tk. The larva was painted by Mr. Bayzand and 

 is shown in Plate XVIII, tig. 3. It was sent to Lord 

 Walsingham on the same date. 



G. Ttvo light quercifolia larvx on black tvdgs during ajld 

 after hyher-nation. 



A^jril 7th. Re-fed. Both lichen-like. 



Ajml 10th. Re-fed. Both at rest on twigs. One had 

 changed skin, and the greyish markings had become rather 

 darker. Both were at rest on twigs with appearance 

 unchanged when they were re-fed on the 16th. 



Aj^ril 2lst. Re-fed. Both on twigs. One larva was 

 white with pale grey markings, the other creamy-wliite 

 with markings of a brownish-grey. Unchanged and on 

 twigs when re-fed on the 28rd. 



A])ril2Qtfi. Re-fed. Both on twigs. The white colour 

 of the larva first mentioned on the 21st had gained a faint 

 bluish tinge. The other larva unchanged. 



May 5th. Re-fed, after having been brought back from 

 London. The creamy-white larva had changed skin and 

 was rather pater in tint. Both were on twigs and un- 

 changed when re-fed on the 11th. The creamy-white 

 larva was painted by Mr. Bayzand on the 14th, and is 

 shown in Plate XVIII, lig. 1. 



May 11th. Re-fed. Both on twigs. One larva large 

 and pale creamy-white with greyish-brown markings. 

 The other much smaller, white with bluish-grey markings, 

 but with tints duller than they were formerly. It had not 

 pTOwn mucli, nor changed its skin. Both larva3 were un- 

 changed in appearnce, and were resting on twigs when 

 they were re-fed on the 22nd. The creamy larva was sent 

 to Lord Walsingham on May 25th. The smaller bluish- 



