Miss Green gave a sudden piping cry, and the glassy appendages on her back opened out suddenly like twin transparently gleaming fans, and blurred into motion too swift for Mel to follow. Miss Green rose into the air like a tiny human helicopter, hands up before her as if she were praying. It wasn't till the horsefly swerved from the kitchenette window and came buzzing back that Mel guessed her purpose. There was a sharper, fiercer drone like a hornet's song as she darted sideways into the insect's path. Mel didn't see her catch it. Its buzzing simply stopped, and then she was dropping gently back to the towel, with the ugly black thing between her hands. It looked nearly as big as her head. There was an exchange of cheerful piping cries between the two. Miss Green laughed up at Mel's stupefied face, lifted the motionless fly to her mouth and neatly bit off its head. Mel turned hurriedly and went into the living room. It wasn't, he told himself, really so very different from human beings eating a chicken. But he didn't feel up to watching what he knew was going to be a dismemberment and a feast. At any rate, the horsefly had settled the feeding problem. His guests could take care of themselves. That night, Miss Green hunted down a few moths. Mel woke up twice with the sudden sharp drone in his ears that told him she had just made her catch. Both times, it was a surge of unthinking physical fright that actually roused him. Awake, and remembering the disproportion in size between himself and the huntress, his reaction seemed ridiculous; but the second time he found he was reluctant to go back to sleep until it would appear that Miss Green was done with her foraging. So he lay awake, listening to the occasional faint indications of her continuing activity within his apartment, and to more familiar sounds without. A train rattled over a crossing; a police siren gave a sudden view halloo and faded into silence again. For a long time, there was only the whispering passage of distant cars over wet pavements, and the slow roll and thump of the surf. A haze of fog beyond the window turned the apartment into a shut-off little world of its own. Miss Green moved about with no more than a whisper of air and the muted pipe of voices from the top of the kitchenette cupboard to show where she was. Mel had put a small carton up there,