Ctenostome Bryozoans is the third in the series of four synopsis devoted to the Bryozoa. oa. As in the previous ones, Synopses Nos 10 and 14 describing the anascans and ascophorans, Ctenostome Bryozoans is complete in itself and includes sections devoted to general bryozoan structure, the classification of the Bryozoa and a key to the higher taxa.