4 ARCHITECTURE OF ANTS. 
and performing the labours and repar- 
ations of the ant-hill. The antenne are 
black and filiform. The corslet is pro- 
tuberant, raised anteriorly, compressed 
and truncated posteriorly, often marked 
with a black stain above, the rest being 
of a clear fallow colour. ‘The peduncle 
of the abdomen is of the same colour, and 
bears a large scale, which is scolloped 
and blackish on its superior margin. 
The abdomen is brown or ash-coloured, 
slightly invested with hair, globose, com- 
posed of five rings, not counting the 
scale, wanting the sting, but armed with 
avenom-bag. ‘The feet are brown, and 
the thighs, at their origin, of a reddish 
tint. I have described, in the Appendix, 
two varieties of these. ants; one with a 
black back, another with a back of the 
same colour as the rest of the corslet. 
This difference, which scarcely affects 
the habitudes of these insects, separates, 
however, those who inhabit the woods 
from those who live along-side hedges, 
and in meadows. It is the latter only, 
