iv Preface. 



The readers of the present volume, who may be in a position to 

 present to the Mnseum series of specimens illustrating the Economic 

 Zoology of any part of the world or belonging to any one of the 

 groups recognised in our systematic classification of the subject, 

 are requested to communicate with the Director. At present the 

 collections, in the Museum, of forms of special economic interest 

 require development and additional material. 



E. EAY LANKESTEE, 



Directo'i 



British Museum (Natural History), 



London, S.W. 



February lOth, 1904. 



