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ANIMAL MIGRATIONS 371
hostile to myself, and they do not throw much
additional light on their habits. Ecitons or Foraging
Ants (called Cazadoras in Peru) seem to be
true wandering hordes, without a settled habita-
tion ; for a certain number of them may always be
seen carrying pupse, apparently of their own species;
but they sojourn sometimes for several days when-
ever they come upon suitable food and lodging. . . .
The first time I saw a house invaded by Caza-
cloras was in November 1855, on the forest slope
of Mount Campana, in the Eastern Peruvian Andes.
I had taken up my abode in a solitary Indian hut,
at a height of 3000 feet, for the sake of devoting a
month to the exploration of that interesting moun-
tain. The walls of the hut were merely a single
row of strips of Palm trees, with spaces between
them wide enough to admit larger animals than
ants. One morning soon after sunrise the hut was
suddenly filled with large blackish ants, which ran
nimbly about and tried their teeth on everything.
My charqui proved too tough for them but ; they
made short work of a bunch of ripe plantains, and
rooted out cockroaches, spiders,
and other suchlike
denizens of a forest hut. So long as they were left
unmolested, they avoided the human inhabitants ;
but when I attempted to brush them away they fell
on me by hundreds and bit and stung fiercely.
I
asked the Indian's wife if we had not better turn
out awhile and leave them to their diversions.
" Do they annoy you ?" said she. "Why, you see
it is impossible for one to work with the ants
running over everything," replied I. \\ hereupon
she filled a calabash with cold water, and going to
the corner of the hut where the ants still continued