248 CRABRONIDE. 
its metropolis shall be discovered it will be taken in abund- 
ance, which is the case wherever it occurs on the continent. 
A new locality was found this year for it at Snaresbrook 
in Epping Forest, Essex, where Mr. Harding captured the 
only g that has yet occurred, and very kindly presented it 
to my Collection, all those taken by Mr. Curtis having 
been g. It is recorded to prey upon species of the genus 
Halictus ; my $ was caught on a thistle-head, in company 
with a Conops, and upon visiting the spot, which I lost no 
time in doing, it appeared to abound with very many 
Halicti, but the weather being gusty and coldish (early in 
September), I was unsuccessful, but hope next year to dis- 
cover its habitation. I had the additional pleasure of re- 
ceiving this beautiful insect alive in a pill-box; and on 
calling upon my friend Mr. Waterhouse, we observed it for 
some time under a large glass: upon offering to touch it, 
it opened its mandibles, and lifted up its head and one of 
its fore-legs in a threatening attitude; I expect therefore 
that it is a very bold insect. Few English Entomologists 
have had the pleasure of seeing this pretty creature alive ; 
but I hope when this much neglected tribe shall be more 
studied and collected, which it is my object to promote by 
publishing this ‘ Essay,’ that very many new and beautiful 
insects will be discovered. 
