PREFACE. 



THE object of this Nomenclature is to present a Catalogue 

 of the well-established species of each family, with a refer- 

 ence to where they are figured and a few of the more im- 

 portant synonyma. 



It is intended for the following purposes : 



1. As a list of the species contained in the Museum 

 Collection. They are marked B.M. in the outer margin. 



2. To point out the Desiderata of that Collection at the 

 period of publication. 



3. As labels for the Cabinet. 



This list must only be considered as prefatory to a more 

 complete Catalogue. 



The family PASSALID^E is chiefly arranged after the 

 method adopted by Percheron in his first revision pub- 

 lished in Guerin's Magazine of Zoology, 1841. 



Mr. FREDERICK SMITH has taken every care in the 

 determination of the species and the references to the 

 synonyma and figures. 



JOHN EDWARD GRAY. 



British Museum, 



1 September 1852. 



