An Annotated List of the Brown Seaweeds, Phaeophyceae, of New Zealand. By Victor W. Lindauer, Pihama, Taranaki. [Read before Hawke's Bay Branch, July 30, 1946; received by the Editor, August 12, 1946: issued separately, September, 1947.] Since the publication of Laing's (1926, 1929) Reference Lists, which included all the then-known Phaeophyceae from our shores, many alterations in nomenclature have been made, the orders and families have been recast, and new species have been discovered. It is, therefore, considered advisable in the light of our present knowledge, to issue a new and up-to-date list. The arrangement follows the scheme as outlined by Kylin (1933). The exact limits of the Ectocarpales are at present uncertain; there is still difference of opinion as to what families should be included or excluded, and whether certain of Kylin's orders should not be regarded as families within the Ectocarpales. Fritsch (1945), following Oltmanns (1922), includes, among others, Leathesiaceae, Chordariaceae, Punctariaceae, Asperococcaceae and Dictyosiphonaceae. Smith (1944) accepts Kylin's arrangement. If any division is to be made between the Ectocarpales (sens. limit.) and the Chordariales it must be an artificial one, depending on vegetative structure, commencing, perhaps, in the neighbourhood of the Myrionemataceae. Smith places this family in the Chordariales, and the writer has adopted the same arrangement. The division of the Sphacelariales is in accord with Sauvageau (1900–14). The Cutleriales, Tilopteridales, Dictyotales, Sporochnales and Desmarestiales are represented each by a single family and are universally recognized as distinctive and coherent units. The Chordariales are classified according to Kylin (1940), the Laminariales follow Setchell and Gardner (1925), while Oltmanns (1922) and Fritsch (1945) are the authorities for the arrangement of the Fucales. It has not seemed advisable to attempt a detailed segregation within the Punctariales for, as Kylin (1933) says: “Eine definitive Familieneinteilung ist gegenwärtig nicht möglich.” In this order, following Levring (1941) Scytothamnus has been placed in the family Chnoosporaceae, the remaining genera being lumped into the Encoeliaceae. The annotations include the habitat and the internal distribution of the species as far as previous lists of reference and the author's own observations permit, but the herbaria of the New Zealand museums have not been examined. In respect to the internal distribution, however, there still remain, unfortunately, many stretches of the coastline which are practically unknown. The author's own observations have been made chiefly from Whangarei to the Far North, in Taranaki, Kaikoura, Timaru, and Stewart Island. He has however, received much material from the Chatham Islands and