INTRODUCTION, 



The principal object of the present Catalogue has been to 

 give a complete list of fell the Anoplura, or Parasitic In- 

 sects, that have been recorded as found in Great Britain 

 and Ireland, indicating those species which are contained in 

 the Collection, and those which are wanting m it. 



The arrangement followed is that used in Mr. Denny's 

 ' Anoplura Britannica,' 8vo, 1842. 



The British Museum possesses the type specimens de- 

 scribed and figured by that author, who has devoted so 

 much of his attention to the study of these animals. 



JOHN EDWAKD GRAY. 



British Museiun, 



\ September 1852. 



