INTRODUCTION, 



The principal object of the present Catalogue has been to 

 give a complete list of the species of the Hymenopterous 

 Insects that have been recorded as found in Great Britain, 

 with their principal Synonyms. 



It is intended for the following purposes : — 



As a Complete List of the species at present known as 

 inhabiting the British Islands. 



As Labels for the Cabinet, for which purpose it has been 

 printed in a peculiar type and only on one side of the paper. 



The Collection contains almost every species in the list, 

 and it consists of the type specimens described by the Rev. 

 William Rtrby, Dr. Leach, Mr. James Francis Stephens, 

 Mr. Francis Walker and Mr. Frederick Smith. 



The Catalogue has been prepared by Mr. Frederick 

 Smith, who has paid so much attention to this order of 

 Insects. 



JOHN EDWARD GRAY. 



August 1, 1853. 



