Otis Adelbert Kline 
The Thing that Walked in the Rain [EPUB ebook] 

IT all comes back to me as I take up my pen—a horrid shriek of pain and terror from high in the air, an enormous thing, taller than a tree, silhouetted against a background of lightning-illuminated storm clouds, like some gigantic tumble-weed, striding over the jungle, walking on its branches. And weaving high above the tree tops in the grip of those branches, a limp and helpless human being. Again I feel a great, green snaky think strike me—knock me down, A band of stinging, burning agony, encircles my body. I hammer it ineffectually with my empty gun. Once more I see Anita, hopeless terror in her eyes, a green arm around her slender waist, dragged away with incredible swiftness. But I must begin at the beginning.