Twenty-four species and one variety of Bryozoa are here recorded from the intertidal zone of the Bay of Fundy. Between tides bryozoans are mainly confined to rock pools; one exception, however, is Flustra foliácea (Linnaeus) which thrives on the extensive areas of tidal mud flats in the Minas Basin. Definite substrate preferences are exhibited by the majority of species collected, some occur exclusively on algae, others on stones; only a small number encrust both. The assemblage in toto has an amphi-Atlantic distribution. Three euryhaline species, Electra monostachys (Busk) (two forms, see p. 339), E. crustulenta (Pallas) and Conopeum reticulum (Linnaeus), were found to occur in the Avon River system in the Minas Basin; E. crustulenta being very prevalent. Some previous records ofElectra monostachys from the east coast of North America have been found to apply to E. crustulenta, and Cribrilina cryptooecium Norman is documented from this area for the first time.