lophobranch

from The Collaborative International Dictionary of English v.0.48

Lophobranch \Loph"o*branch\, a. [Gr. lofia` crest or tuft +
   bra`gchion gill.] (Zool.)
   Of or pertaining to the {Lophobranchii}. -- n. One of the
   {Lophobranchii}.
   [1913 Webster]