. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. IX PELAGIC ANIMAL LIFE 575 Together with these forms we often find Cestus veneris, one of the Ctenophorae. Ctenophores, a class including many pelagic forms, both surface and deep sea. Four species of Ctenophores have been observed in the arctic region : Mertensia ovum, Pleurobrachia pileus, Bolina infundibulum, and Beroe cucumis. After studying the collections of the "Belgica" and the
. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. IX PELAGIC ANIMAL LIFE 575 Together with these forms we often find Cestus veneris, one of the Ctenophorae. Ctenophores, a class including many pelagic forms, both surface and deep sea. Four species of Ctenophores have been observed in the arctic region : Mertensia ovum, Pleurobrachia pileus, Bolina infundibulum, and Beroe cucumis. After studying the collections of the "Belgica" and the "Michael Sars," Damas and Koefoed state that Pleurobrachiapileus. V •nuiti^.-^ M~\ Fig. 409. Physalia. (From Steuer.) is a coast form occurring from the channel. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murray, John, Sir, 1841-1914; Hjort, Johan, 1869-. London Macmillan
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