364 ANIMALS OF EGA. * Chap. Y. 
attacks even the nests of other stinging species (Myr- 
mica), but it avoids the light, moving always in conceal- 
ment under leaves and fallen branches. When its 
columns have to cross a cleared space, the ants construct 
a temporary covered way with granules of earth, arched 
over, and holding together mechanically ; under this 
the procession passes in secret, the indefatigable crea- 
tures repairing their arcade as fast as breaches are made 
in it. 
Next in order comes the Eciton vastator, which has 
no eyes, although the collapsed sockets are plainly 
Foraging ants (Eciton erratica) constructing a covered road— Soldiers sallying 
out on being disturbed. 
visible ; and, lastly, the Eciton erratica, in which both 
sockets and eyes have disappeared, leaving only a faint 
ring to mark the place where they are usually situated. 
The armies of E. vastator and E. erratica move, as far 
as I could learn, wholly under covered roads, the ants 
constructing them gradually but rapidly as they ad- 
vance. The column of foragers pushes forward step 
