Fourteen species of erect, reticulate bryozoans are described and illustrat
ed with SEM micrographs. Nine species introduced by P. H. MacGillivray and
two by T. Hincks are included; their taxonomic status is stabilized by the
selection of type specimens. A new species is described in each of the gene
ra Triphyllozoon and Reteporellina. Dictyochasma gen. nov. is introduced fo
r D. janus sp. nov.