The Collaborative International Dictionary
Capitibranchiata
Tubicolae \Tu*bic"o*l[ae]\, n. pl. [L. tubus a tube + colere to inhabit.] (Zo["o]l.) 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.
Capitibranchiata
Capitibranchiata \Cap`i*ti*bran`chi*a"ta\, n. pl. [NL., from L. caput, capitis, head + -branchiae gills.] (Zo["o]l.) A division of annelids in which the gills arise from or near the head. See Tubicola.