These ants are of highly carnivorous habits, and move about in large
armies, devouring everything of animal nature that comes in their way.
The fact that they are blind, or practically so, does not seem to
interfere with their devastations. Some of the forms are common in the
hotter parts of South America, while others, the “driver” ants, are well
known in Africa, where criminals, it is said, are sometimes tied up in
their path, to perish miserably, if speedily.