Simile
So I opened it–you cannot imagine how stealthily, stealthily–until at length a single dim ray like the thread of the spider shot out from the crevice and fell upon the vulture eye


Alliteration
Hearken! and observe how healthily, how calmly, I can tell you the whole story.
Meanwhile, the hellish tattoo of the heart increased.
It is the beating of his hideous heart!