The spread of the huge wings was fully a hundred feet across and its swollen body was larger by far than the huge slug which stood beside them. The butterfly waved its thirty-foot tentacles and approached one of the blue flowers. A long curled sucker, fifty feet in length, unrolled and was plunged down into the heart of the trumpet-shaped flower. Gradually the blue color faded to mauve and then to a brilliant crimson. The butterfly abandoned it when the change of color was completed and flitted away to another of the blue blooms. * * * * * "What manner of thing is that?" demanded Damis. "That was a member of the council," replied Attomanis. "She was chosen to be one of those to perpetuate our race. Evolution has gone further with us than on your planet but it will show you what in time you may expect. "Life started with an amoeba on Mars as it did on Earth and the slow process of evolution followed similar lines. At one time forms like yours were the ruling and guiding intelligences of Mars. They were, however, a highly specialized form. As conditions changed, the form changed. The head and chest grew larger as the air grew thinner until the enfeebled trunk and limbs could no longer support their weight. Gradually the form died out and was replaced by others. "The forms which you call insects on your Earth were more primitive and hardier forms and more readily adaptable. They increased in size and in intelligence until they were ready to supplant all other forms. The last vestiges of the bipeds were carefully nurtured and guarded by our forefathers until the vanishing atmosphere made their survival impossible. The insect form became supreme. "We multiplied with extreme rapidity and would have overcrowded the planet had we not learned several things. Our present form of life is immature in many ways. For example, we are totally unable to reproduce our kind. That is the function of the next phase. In this form, however, the intelligence reaches its maximum. As a result, all living creatures, except selected ones, have their growth arrested at the larval stage and pass their entire life in this form. Certain ones at long intervals of time as the population diminishes, are allowed to spin cocoons and hatch out in the form you have witnessed. This form is almost brainless, the securing of nourishment from flowers and reproducing their kind being the limits of their intelligence. The eggs are maturing in the body of the one you saw. Soon she will lay many thousands of them and then, her life mission accomplished, she will die. We will gather these eggs and tend them until they hatch. All defective ones will be destroyed and the balance will be instructed until they are ready to take their place in the community and carry on the work of the planet." * * * * *