hetvjcen lcind(yptcrou>< larvai and thrir surroundings. 345 



dark grey larva, having been sent to Lord Walsingbam on 

 this date. The remaining large larva was dark brown 

 with large yellowish markings ; the small larva had 

 changed its skin and was bluish-grey. The larvse were 

 re-fed on the 17th and 22nd, when they were on sticks 

 and unchanged in appearance. The larger larva appeared 

 to be unhealthy on the 22nd and died on the 23rd. 



May loth. Re-fed. The colour of the small larva was 

 unchanged, as also on June 1st and 7th. It continued to 

 grow slowly without further change, and finally spun up 

 on July 28th. 



E. Three dark, ivhite-niarhed quercifolia larvse, including 

 the darkest hut one in II, on hlack twigs during and after 

 hybernation. 



.April 7th. Ee-fed. 



A'pril IQth. Re-fed. All 3 larvae on twigs. Two larvas 

 had changed skin, but the appearance of all 3 remained 

 the same, viz. black with very conspicuous white markings. 

 They were unchanged and at rest on the twigs when 

 re-fed on the 16th, 21st and 23rd. 



April 26th. Re-fed. All on twigs. The dark colour of 

 the larvae appeared to have become more distinctly grey — 

 dark grey in two case.s, grey in the third. As before, the 

 dark shade was combined with white markings. 



3fay 2nd. One dark grey and white larva had changed 

 skin and was blackish and white. 



May 11th. Re-fed. The largest larva with a rather 

 darker ground-colour than others was sent to Lord 

 Walsingham. The 2 remaining larva3 on twigs ; both 

 blackish and white. Re-fed again on the 17th, when they 

 were on the twigs and unchanged. The smaller larva did 

 not seem healthy and had not grown like the other. The 

 larger larva, the darkest of all in set II, was painted on 

 May 17th, and is represented in Plate XVIII, fig. 4. 



May 22nd. Re-fed. Two larvae on twigs. The appear- 

 ance unchanged, but neither looked healthy. The larger 

 larva died on the 25th and the smaller on June 1st. 



F. One light quercifolia larva on lichen-covered sticks 



throughout. 

 April *lth. Re-fed. White and pale grey. 

 April 10th. Re-fed. On stick. The larva had changed 

 its skin, and had become white with markings of two 



