Cavor speaks of them as Phi-oo and Tsi-puff. Phi-oo, he says, was about 5 ft. high; he had small, slender legs about 18 in. long, and slight feet of the common lunar pattern. On these balanced a little body, throbbing with the pulsations of his heart. He had long, soft, many-jointed arms ending in a tentacled grip, and his neck was many-jointed in the usual way, but exceptionally short and thick. His head, says Cavor—apparently alluding to some previous description that has gone astray in space—"is of the common lunar type, but strangely modified. The mouth has the usual expressionless gape, but it is unusually small and pointing downward, and the mask is reduced to the size of a large flat nose-flap. On either side are the little eyes.
"The rest of the head is distended into a huge globe, and the chitinous leathery cuticle of the mooncalf herds thins out to a mere membrane, through which the pulsating brain movements are distinctly visible. He is a creature, indeed, with a tremendously hypertrophied brain, and with the rest of his organism both relatively and absolutely dwarfed."
In another passage Cavor compares the back view of him to Atlas supporting the world. Tsi-puff, it seems, was a very similar
