hetioeen Icpidoptermts larvx and thrir surround ings. 335 



August \^t]i. Fifteen counted. Rather variable in 

 colour, but somewhat greyer than at first. 



August 19th. Fifteen counted. 



August 1%id. Fifteen counted. 



August 2(\tli. Fourteen counted. 



Sejitemhcr 1st. Fourteen counted. 



September oth. Fourteen counted. 



September 9th. Fourteen counted. 



September IWi. Fourteen counted. Colour variable : 

 3 black and white ; 9 grey and black-and-white ; 2 grey 

 and brown-and-white. 



September IQth. Fourteen counted. 



September 18th. Fourteen counted. 



September 21st. Fourteen counted. All on the shoots 

 of the hawthorn. 



September 2&h. Fourteen counted. 



October Srd. Fourteen counted. 



October 7th. Fourteen counted. 



October ISth. Fourteen counted. Colour unchanged, 

 but rather darker than when last noted. Arranged for 

 hybernation in two muslin bags on the hawthorn tree 

 described on p. 337 ; one bag containing the 7 darkest, the 

 other the 7 lightest. 



First General Comparisox (September 21st), all 



THE QUERCIFOLIA LaRV.E BEING PLACED UPON A 

 UNIFORM BACKGROUND OF WHITE PAPER. 



I. 0. qucrcifoHa. 



As regards the larva; with black twigs of Turkish oak, it 

 should be noted that the moisture in the glass cylinders 

 had eucouraged the growth of small whitish spots of mould 

 upon the dark bark, and it is possible that some etfect. may 

 have been produced by their presence in the environment. 



Of the 15 larva:, 6 were remarkable for the veiy .slight 

 development of light markings upon the intense black 

 ground-colour : in one larva indeed the light markings 

 were altogether wanting. The remaining 9 larvae were 

 black, chequered with white markings, which were however 

 far less developed than in the former group which had 

 been with lichen-covered sticks. The ground-colour of 

 these 15 larvse differed strongly from that of all the others 

 in its deep black shade. 



TRANS. ENT. SOC. LOND. 1903. — PART IIL TOCT.) 23 



