33-i Professor E. B. Poulton on colmir-rdation 



The 12 larvae were re-fed on September 26th and 30th, 

 and on October 3rd and 7th. 



III. G. qucrcifolia. 



July 2Sth, 1893. Fifteen of the qucrcifolia placed with 

 red-brown stems of the bramble, intermixed with their 

 food-plant, hawthorn. They were re-fed and examined 

 on the following dates. 



August 1st. Only 1 resting on bramble stem, others on 

 leaf-stalks. Blackish-grey in colour. 



August btli. Seven on stems, 5 on green parts of food- 

 plant, 3 on gauze top of cylinder. 



Augitst 9th. Thirteen on stems, 1 on green parts of 

 food-plant, 1 missing. 



August IMh. Fourteen on stems. Some black with 

 white markings, some grey and some mottled reddish- 

 brown. 



August 19th. Fourteen on stems. 



August 22nd. One missing, all on stems. 



August 2Qth. Thirteen counted. 



August 81s/. Thirteen on stems. All were now grey- 

 brown with black and white markings. 



September ith. Thirteen on stems. 



Septeiiiber 7th. Thirteen on stems. 



Septeiiiber 9th. Thirteen on stems. 



Septeniber 14:th. The colours were now as follows : — 

 1 brown and grey with white markings, 2 brown with white 

 markings, 3 brown with various shades of grey, 3 grey and 

 brown with white markings, 2 grey with white markings 

 and brown patches, 2 dark grey with white markings. 



September 16th. Thirteen counted. 



September 18th. Thirteen on stems. 



Septemher 21st. Twelve on stems ; 1 on hawthorn 

 twig. 



They were also re-fed on September 26th, 30th, October 

 3rd and 7th. 



IV. G. qucrcifolia, 



July 28th, 1893. Fifteen larva? of qucrcifolia placed 

 with green leaves and shoots of the hawthorn. They were 

 re-fed and examined on the following dates. 



August 4tth. Fifteen counted. Blackish-grey in colour. 



August 8th. Fifteen counted. 



