The whip rachis has a light-absorbing black, leathery carapace covering a vaguely centipede-like form. Two pairs of opposing jaws at the end of a yard-long, ridged body not unlike a human spinal column, with long two long rows of legs that resemble finger bones. Thin, spindly hairs jut from either side of the creature between segments. This creature does not possess even the hint of a head. It moves in swift bursts, snapping its body in sudden, curving thrusts along walls and floors.