PREFACE. 



iHE principal object of the present Catalogue has been 

 to give a complete list of all the known species of Andre- 

 NiD^ and Apid^, at the same time indicating those at 

 present contained in the Collection of the British Museum. 



This part of the Catalogue has been prepared by 

 Mr. Frederick Smith, who has taken every care in the 

 determination of the species, the references to the syn- 

 onyma, and in the descriptions of such species as hitherto 

 are apparently undescribed. 



The remaining Parts will follow as soon as they can be 

 completed. 



JOHN EDWARD GRAY. 



24th Mav, 1853. 



