Robert E. Howard - Worm of The Valley

A giant tentalcy monster killed by Niord in R.E.H.'s "Valley of the Worm".

It was white and pulpy, and drew its quaking bulk along the ground, worm- fashion. But it had wide flat tentacles, and fleshly feelers, and other adjuncts the use of which I am unable to explain. And it had a long proboscis which it curled and uncurled like an elephant's trunk. Its forty eyes, set in a horrific circle, were composed of thousands of facets of as many scintillant colors which changed and altered in never-ending transmutation. But through all interplay of hue and glint, they retained their evil intelligence – intelligence there was behind those flickering facets, not human nor yet bestial, but a nightborn demoniac intelligence such as men in dreams vaguely sense throbbing titanically in the black gulfs outside our material universe. In size the monster was mountainous; its bulk would have dwarfed a mastodon.

Robert E. Howard. - "The Valley of the Worm"