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PREFACE. 



This Part contains the completion of the list of species , 

 belonging to the Family Apid.e, at the same time 

 indicating those at present contained in the Collection of 

 the British Museum. | 



It has been prepared by Mr. Frederick Smith, 

 who has taken every care in the determination of the 

 species, the references to the synonyma, and in the i 

 descriptions of such species as hitherto are apparently 

 undescribed. 



The remaining Families will follow as soon as they i 



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can be completed. 



JOHN EDWARD GRAY. \ 

 October 1854. 



