@inbook{ERMS:SourceID:8984, author = {Boury-Esnault, N.}, note = {The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera}, title = {Family Polymastiidae Gray, 1867. Pp. 201-219. In: Hooper, J.N.A. & Van Soest, R.W.M. (eds) Systema Porifera - A guide to the classification of sponges. (2 volumes) Kluwer Academic/ Plenum Publishers: New York, 1708 + xvliii}, url = {http://marbef.org/data../aphia.php?p=sourcedetails&id=8984}, year = {2002} }