



INTRODUCTION. 



THE principal object of the present Catalogue has been to 

 give a complete list of the Specimens of Hemipterous In- 

 sects contained in the Collection of the British Museum, 

 indicating at the same time the peculiarities of each, as re- 

 gards variation of character, locality, and the source from 

 whence it has been derived. With this view, the different 

 individuals of each species contained in the Collection are 

 indicated by the letters , 6, c, &c., following the name of 

 the species and its synonyms, and the description, if it ap- 

 peared to have been before undescribed. 



This part of the Catalogue of Hemipterous Insects has 

 been prepared, and the new species described, by Mr. W. 

 S. DALLAS, so well known for his attention to this Order 

 of Insects. 



The more interesting of the new genera are figured in 

 the Plates at the end of the Catalogue. 



The remaining Parts are in hand, and will follow as soon 

 as they can be completed. 



JOHN EDWARD GRAY. 



British Museum, 



July 1st, 1851. 



M71782 



