hehvcen lepidopteroics larvm and their surroihndings. 343 



April lOth. Re-fed. Four larvae on sticks. Appear- 

 ance unchanged. 



A'pril IQth. Re-fed. Four on sticks, 1 on hawthorn. 

 Only 1 larva was now entirely black, the remaining 4 had 

 acquired large white patches. Two larvse, including the 

 first-mentioned, were removed to cylinder B^. 



April 20th. Re-fed. All 3 on sticks, appearance un- 

 changed and on sticks, as also when re-fed on the 23rd. 



April TJth. Re-fed. Two on sticks, 1 on hawthorn. 

 It was noted that in one of the larvae the white marks 

 were less developed than in the others. 



May Id. Re-fed. The last-mentioned larva had 

 changed skin and the white markings were reduced to a 

 single anterior pair and were quite small. The 2 others 

 remained as before, and no further change was seen when 

 the 3 larvae were re-fed on the 3rd, 11th, 17th, 21st, and 

 25th. They were noted as at rest on the sticks on all these 

 dates, except the first and last. The darkest larva was 

 painted by Mr. Bayzand on May 19th, and is shown in 

 Plate XVII, fig. 14. Of the two others, the one with the 

 more intensely black ground-colour was painted by him 

 on the 22nd, and is shown in fig. 15 of the same plate. 

 Both these figured larvae were sent to Lord Walsingham 

 on May 25 th, and the third was sent on May 31st. 



B^. The t'loo quercifolia larva} separated jrom cylinder B on 

 April IQth. 



April IQth. The larvae were respectively entirely black, 

 and black with Avhite patches. 



April 20th. Re-fed. Both on sticks, colour unchanged. 

 Similar results were noted when re-fed on the 23rd and 

 27th. 



May 1st. Both larvae had apparently changed skin. 

 The darker one had gained a pair of small Avhite marks 

 anteriorly. On May 5th the larvae were brought back 

 from London. No further change. 



May nth. Re-fed. The black-and-white larva was 

 sent to Lord Walsingham. The single dark larva, on stick ; 

 appearance unchanged. Similar notes on the 17th, 22nd, 

 and 25th, except that it rested on the hawthorn on the 

 first-named date, and its position was not recorded on the 

 last-named. The larva was sent to Lord Walsingham on 

 May 31st. 



