between lepidopterous larve and their surroundings. 335 
August 14th. Fifteen counted. Rather variable in 
colour, but somewhat greyer than at first. 
August 19th. Fifteen counted. 
August 22nd. Fifteen counted. 
August 26th. Fourteen counted. 
September 1st. Fourteen counted. 
September 5th. Fourteen counted. 
September 9th. Fourteen counted. 
September 13th. Fourteen counted. Colour variable: 
3 black and white; 9 grey and black-and-white ; 2 grey 
and brown-and-white. 
September 16th. Fourteen counted. 
September 18th. Fourteen counted. 
September 21st. Fourteen counted. All on the shoots 
of the hawthorn. 
September 26th. Fourteen counted. 
October 3rd. Fourteen counted. 
October 7th. Fourteen counted. 
October 18th. 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. 387; one bag containing the 7 darkest, the 
other the 7 lightest. 
First GENERAL COMPARISON (SEPTEMBER 21ST), ALL 
THE QUERCIFOLIA LARVA BEING PLACED UPON A 
UNIFORM BACKGROUND OF WHITE PAPER. 
T. G. quererfolia. 
As regards the larva with black twigs of Turkish oak, it 
should be noted that the moisture in the glass cylinders 
had encouraged the growth of small whitish spots of mould 
upon the dark bark, and it is possible that some effect may 
have been produced by their presence in the environment. 
Of the 15 larve, 6 were remarkable for the very slight 
development of light markings upon the intense black 
ground-colour: in one larva mdeed the light markings 
were altogether wanting. The remaining 9 larvge 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 larve differed strongly from that of all the others 
in its deep black shade. 
TRANS. ENT. SOC. LOND. 1903.—PART UI. (OCT.) 23 
