P R E F A C E, 



This Catalogue contains descriptions of all the species of 

 Bees which have hitherto been found in Great Britain, 

 with some account of the habits of the genera and the 

 pecuhar economy of individual species, at the same time 

 indicating their localities. Considerable attention has been 

 devoted to the synonyma ; and to ensure accuracy in the 

 nomenclature, British examples have been compared with 

 authentically-named continental specimens. 



Museum 



M 



JOHN EDWARD GRAY 



British Museum, 

 1 May, 1855. 



