Summarise those paragraph for me please . As I stared at this sinister apparition crawling towards me, I felt a my cheek as though a fly had lighted there. I tried to brush it away hand, but in a moment it returned, and almost immediately came by my ear. I struck at this and caught something threadlike. It was swiftly out of my hand. With a frightful qualm, I turned, and I saw t grasped the antenna of another monster crab that stood just behin evil eyes were wriggling on their stalks, its mouth was all alive with and its vast ungainly claws, smeared with an algal slime, were dess upon me. In a moment my hand was on the lever, and I had placed a between myself and these monsters. But I was still on the same beac saw them distinctly now as soon as I stopped. Dozens of them seemed crawling here and there, in the sombre light, among the foliated sheets intense green.