PREFACE. 



The object of tlie present Catalogue is to give a complete 

 list of all the known genera and species of Dorylid^ 

 and Thtnnidje, including those which have been pre- 

 viously recorded, together with descriptions of such as 

 appear to be hitherto undescribed. 



The letters B.M. in the margin indicate the species 

 contained in the Collection of the Britisli Miiseum. 



JOHN EDWAED GRAY. 



1st June, 1859. 



