Source : Webster's Revised Unabridged Dictionary (1913)

Rypophagous \Ry*poph"a*gous\ (r[-i]*p[o^]f"[.a]*g[u^]s), a. [Gr.
   "ry`pos filth + fagei^n to eat.] (Zo["o]l.)
   Eating, or subsisting on, filth.