The hideous guard reared with pain and rage. But this was no worker termite, to be killed with a thrust. As though nothing had happened, the huge hulk wheeled around. The mandibles crashed shut with deafening force over the space Jim had occupied but an instant before.

And now the inner circle of the multiple ring of death was within a few yards. Jim leaped to put himself behind the living barrier of the attacking soldier. But it was only a matter of a few seconds now, before he and Denny would be caught in the blind bull charges of the wounded soldier or by the surrounding ring of maddened termites.

"Denny?" he shouted imploringly over his shoulder, not daring to take his eyes off the danger in front of him.

"Soon!" he heard Dennis pant.

The entomologist had got almost up to the twelve-foot jaws that closed the exit. He paused a moment, gathering strength. Then he heaved the soft mass of the dead termite into the clashing mandibles.

"Jim!" he cried, as the burden left his arms.

Jim turned, raced the few yards intervening between the ring of death and the doorway. Together they waited to see if their forlorn hope would work....

It could not have lasted more than a second, that wait, yet it seemed at least ten minutes. And then both cried aloud—and crouched to repeat the maneuver that had saved them from death when they had first entered this insect hell.

For the enormous, smashing jaws had caught the body of the worker termite with ferocious eagerness, and were worrying the inanimate carcass with terrible force.

The great jaws were occupied just an instant before the monster sensed that it was one of his own kind that he was mangling so thoroughly. But in that instant Jim had slid on his chest along the floor past the armored head and shoulders, and Dennis had leaped to follow.