HUNTER FROM BEYOND
"What I saw was a forward-slouching, vermin-gray figure, wholly devoid of hair or down or bristles, but marked with faint, etiolated rings like those of a serpent that has lived in darkness. It possessed the head and brow of an anthropoid ape, a semi-canine mouth and jaw, and arms ending in twisted hands whose black hyena talons nearly scraped the floor. The thing was infinitely bestial, and, at the same time, macabre; for its parchment skin was shriveled, corpselike, mummified, in a manner impossible to convey; and from eye sockets well-nigh deep as those of a skull, there glimmered evil slits of yellowish phosphorescence, like burning sulphur. Fangs that were stained as if with poison or gangrene, issued from the slavering, half-open mouth; and the whole attitude of the creature was that of some maleficent monster in readiness to spring."
Clark Ashton Smith, The Hunters From Beyond