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continent of Europe, appears to have attracted little attention 

 in this country, and so far as the literature on the subject is 

 concerned the most extended notice of the manner of feeding 

 of the larva appears in Wilkinson's 'British Tortrices,' where 

 we read that ' The larva feeds within a hollow resinous 

 exudation from the branches of pine trees, occasioned by the 

 wound in the bark made by the young larva feeding therein.' 

 I have therefore thought that a few notes upon the larvse from 

 which the series exhibited this evening were bred may be of 

 interest. But before proceeding with them I may take the 

 opportunity to mention that the insect described and figured 

 in Westwood and Humphreys' ' British Moths/ under the 

 name of Orthotcenia i^esinella, and said to have been taken 

 in fir plantations in Kent and Surrey, should probably be 

 referred to Retiiiea turionana, Hb. ; certainly not to this 

 species, which, so far as this country is concerned, has 

 occurred only in the more northern parts of our islands, and 

 even there it is by no means generally distributed, but, as is 

 the case with many other fir- feeding Tortrices, it has usually 

 been present in some numbers in the few favoured places 

 where it has been observed, and so far as I am aware there is 

 no record of it from any locality south of Perthshire. 



" In the beginning of May ot last year (1888) I heard from 

 Mr. Salvage, who was then collecting in the neighbourhood 

 of Forres, a town on the southern coast of the Moray Firth, 

 that he had observed larvae of this species feeding in a 

 resinous exudation on the twigs of the Scotch firs {Pinus 

 sylvestris) that abounded in the district ; they were then 

 small, and did not increase much in size during the month. 

 After this they fed up rapidly, and by the end of June had 

 the appearance of being nearly full fed ; they, however, 

 showed no appearance of pupating, and at the end of Sep- 

 tember, when he left Forres for the South, bringing a quan- 

 tity of the fir twigs with the resinous nodules attached with 

 him, they were still larvae. 



" Having heard of the non-success attending some previous 

 attempts to rear this species, I determined so soon as the 

 larvae came into my possession to experiment upon some of 

 them by keeping them at a higher temperature than they 

 would experience in a state of nature ; and accordingly I 



