1922-1964 ca. 5000 p., num. figs & pls, paperbound or disbound (= taken from journal, no covers). Published in Videnskabelige Meddelelser fra Dansk naturhistorisk Forening i Kobenhavn. Contains numerous important contributions like: Ditlevsen, Marine freeliving Nematodes / Broch, Studies on Pacific Cirripeds / Mortensen, Echinoderms from New Zealand and the Auckland-Campbell Islands / Michaelsen, Ascidiae Ptychobranchiae / Dyktiobranchiae / Krikobranchiae von Neuseeland und den Chatham-Inseln / Sérène, Goneplacidae et Pinnotheridae / Stock, Pycnogonida from Indo-West-Pacific, Australian, and New-Zealand Waters / Odhner, New Zealand Mollusca / Carlgren, Actiniaria from New Zealand and its Subantarctic Islands / Bronsted, Sponges from New Zealand / Bock, Planarians / Boschma, Madreporaria. I. Fungiidae / Weber-van Bosse, Algues de l'Expédition danoise aux îles Kei / Augener, Polychaeta von Neuseeland and many other contributions. We added a biography and bibliography of Th. Mortensen.