The Collaborative International Dictionary of English v.0.48:

Geodephagous \Ge`o*deph"a*gous\ (j[=e]`[-o]*d[e^]f"[.a]*g[u^]s),
   a. [Gr. ge`a, gh^, earth + 'adhfa`gos eating one's fill;
   gluttonous.] (Zool.)
   Living in the earth; -- applied to the ground beetles.
   Geodesic