capitibranchiata

from The Collaborative International Dictionary of English v.0.48

Tubicolae \Tu*bic"o*lae\, n. pl. [L. tubus a tube + colere to
   inhabit.] (Zool.)
   A division of annelids including those which construct, and
   habitually live in, tubes. The head or anterior segments
   usually bear gills and cirri. Called also {Sedentaria}, and
   {Capitibranchiata}. See {Serpula}, and {Sabella}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Capitibranchiata \Cap`i*ti*bran`chi*a"ta\, n. pl. [NL., from L.
   caput, capitis, head + -branchiae gills.] (Zool.)
   A division of annelids in which the gills arise from or near
   the head. See {Tubicola}.
   [1913 Webster]