37 



PREFACE. 



THE principal object of the present Catalogue has been 

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

 rial Hymenoptera, at the same time indicating those at 

 present contained in the Collection of the British Museum. 



This Part of the Catalogue contains the MUTILLID.E 

 and POMPILID.E, and has been prepared by Mr. FREDE- 

 RICK SMITH, who has taken every care in the deter- 

 mination of the species, in referring to the synonyma, and 

 in the descriptions of those species which appear to have 

 remained hitherto uiidescribed. 



The remaining Parts will follow as soon as they can be 

 completed. 



JOHN EDWARD GRAY. 



7 March 1855. 



M591669 



