The Collaborative International Dictionary of English v.0.48:

Myxocephalus \Myxocephalus\ prop. n.
   A genus of fish including the grubb (Myxocephalus aenaeus),
   a type of sculpin.

   Syn: genus Myxocephalus.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Myxocephalus aenaeus
    n 1: small sculpin of the coast of New England [syn: grubby,
         Myxocephalus aenaeus]