INTRODUCTION 



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The principal object of the present Catalogue has been to give 

 a complete list of all theTortrices that have been recorded as found 

 in Great Britain, indicating at the same time those species that are 

 contained in the Collection. 



This Catalogue has been prepared by James Francis Stephens, 

 Esq., so well known for his works on British Insects, for the extent 

 of his cabinet, and the liberality with which he allows it to be 

 consulted. 



Mr. Stephens has endeavoured to arrange these insects according 

 to their natural affinities, so far as is practicable with a local col- 

 lection ; and has taken great pains to ascertain every name which 

 has been applied to the respective species and their varieties, the 

 author of the same, and the date of publication ; the references to 

 such names as are unaccompanied by descriptions being included 

 in parentheses : all are arranged chronologically, excepting those 

 to the illustrations and to the figures, which invariably follow their 

 authorities. With these exceptions it has not been attempted 

 to give the synonymy, from the impracticability of so doing within 

 moderate limits ; they may be found quoted at length, up to the 

 period of its publication, in Mr. Stephens's ' Systematic Catalogue 

 of British Insects,' 8vo, 1829. 



The species in the British Museum Collection are indicated by 

 the letters, B. M., annexed ; while those in the Synoptic List, to 



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