In the dim half-light of the Venusan night I saw confronting me a creature that might be conjured only in the half-delirium of some horrid nightmare. It was about as large as a full-grown puma, and stood upon four handlike feet that suggested that it might be almost wholly arboreal. The front legs were much longer than the hind, suggesting, in this respect, the hyena; but here the similarity ceased, for the creature’s furry pelt was striped longitudinally with alternate bands of red and yellow, and its hideous head bore no resemblance to any earthly animal. No external ears were visible, and in the low forehead was a single large, round eye at the end of a thick antenna about four inches long. The jaws were powerful and armed with long, sharp fangs, while from either side of the neck projected a powerful chela. Never have I seen a creature so fearsomely armed for offense as was this nameless beast of another world. With those powerful crablike pincers it could easily have held an opponent far stronger than a man and dragged it to those terrible jaws. For a time it eyed me with that single, terrifying eye that moved to and fro at the end of its antenna, and all the time its chelae were waving slowly, opening and closing. In that brief moment of delay I looked about me, and the first thing that I discovered was that I stood directly in front of an opening cut in the bole of the tree; an opening about three feet wide and over six feet high. But the most remarkable thing about it was that it was closed by a door; not a solid door, but one suggesting a massive wooden grill. As I stood contemplating it and wondering what to do, I thought that I saw something moving behind it. Then a voice spoke to me out of the darkness beyond the door. It sounded like a human voice, though it spoke in a language that I could not understand. The tones were peremptory. I could almost imagine that it said, “Who are you, and what do you want here in the middle of the night?” “I am a stranger,” I said. “I come in peace and friendship.” Of course I knew that whatever it was behind that door, it could not understand me; but I hoped that my tone would assure it of my peaceful designs. There was a moment’s silence and then I heard other voices. Evidently the situation was being discussed; then I saw that the creature facing me upon the causeway was creeping toward me, and turned my attention from the doorway to the beast. I had no weapons, nothing but a length of futile rope; but I knew that I must do something. I could not stand there supinely and let the creature seize and devour me without striking a blow in my own defense. I uncoiled a portion of the rope and, more in despair than with any hope that I could accomplish anything of a defensive nature, nicked the end of it in the face of the advancing beast. You have seen a boy snap a wet towel at a companion; perhaps you have been flicked in that way, and if you have, you know that it hurts.