The fulmars and ivory gulls were very bold and noisy, the latter being specially objectionable. Ivory gulls were seen at the winter hut in Franz Josef Land until October, when all water had long been frozen over, and appeared again as early as March 12, 1896. The first roseate gulls were young birds observed August 3, 1894, in 81° 05′ N., 120° E., about 500 kilometres from the nearest land. A long and interesting description is given of these gulls in various stages. One of the beautiful plates, which is imperfectly reproduced, shows the plumage of a very young gull about a month old. Their food consists exclusively of small fish and crustaceans, of the latter the _Hymenodora glacialis_ predominating. Large numbers of these beautiful gulls were seen in 1895 to the northeast of Franz Josef Land, which points to their breeding in that locality. One was seen by Nansen on July 11, 1895, in 82° 08′ N., flying from the northeast. The very full memoir on _Crustacea_ is by Dr. G. O. Sars, well known as one of the editorial committee of the scientific work of the Norwegian North Atlantic Expedition. As the greater number of marine vertebrate animals collected by the Norwegian North Polar Expedition belong to the _Crustacea_, this memoir covers the greater part of the marine collection. The _Copepoda_ are predominant, especially those belonging to the _Calanoid_ group, having been taken at nearly every haul along the whole route of the _Fram_. The zoölogical equipment of the _Fram_ was based unfortunately on the supposition that the Siberian basin was shallow, so that the enormous oceanic depths which were found were only inadequately explored by an extemporized sounding apparatus. While the results of the dredging operations indicate that there was very little animal life at the bottom of the ocean, on the other hand, it appears that the entire surface of the sea, which consisted usually of small temporary openings in the ice-pack, was covered with abundant life throughout the entire year even to the most northern latitudes. Including surface and deep-sea specimens, there were taken on October 12, 1895, no less than eleven species in latitude 85° 13′ N., longitude 79° E. On June 28, 1895, in 84° 32′ N., 76° E., there were taken from the surface by tow net in a large water-channel fourteen species. This indicates abundant marine life in the sea immediately near the North Pole. The pelagic animals, therefore, were not found at the sea surface alone, but were also drawn from considerable depths. Many specimens were obtained from strata at least 250 metres below the surface, and in a number of instances from depths ranging between 500 and 1,000 metres. It is to be added that the imperfect development of the visual organs of the peculiar amphipod, _Cyclocaris Guilelmi_, Chevreux, points to abyssal habits, as similar conditions do in the cases of other pelagic animals.