. 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. INVERTEBRATE BOTTOM FAUNA 541. Fig. 384. Deima fastosi/m, Theel. " Michael Sars, Station 48. 1910, tarda, Pontophilus norvegicus, Pagurus pubescens, Calocaris macandrece, Geryon tridens. Worms: Aphrodite aculeata, Lcetmonice ftlicornis, Lumbrinereis fragilis. Brachi- opod ; Waldheimia septata (in large quantities). This list also might easily be extended. We see, therefore, that the fauna in
. 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. INVERTEBRATE BOTTOM FAUNA 541. Fig. 384. Deima fastosi/m, Theel. " Michael Sars, Station 48. 1910, tarda, Pontophilus norvegicus, Pagurus pubescens, Calocaris macandrece, Geryon tridens. Worms: Aphrodite aculeata, Lcetmonice ftlicornis, Lumbrinereis fragilis. Brachi- opod ; Waldheimia septata (in large quantities). This list also might easily be extended. We see, therefore, that the fauna in the continental (archibenthal) deep - sea area of the Northern At- lantic consists partly of species peculiar to it, and partly of others that regu- larly belong to the con- tinental deep-sea fauna of the Norwegian Sea. Two questions arise: How is the Atlantic archibenthal (and abyssal) fauna distri- buted outside the Nor- wegian Sea? Is there any real resemblance between this fauna v v and its counterpart k \ in the cold area of rWtV I t^e Norwegian Sea? \* There seem to Limits of the be some reasons for *ar^enthal fixing the lower limit of the archi- benthal fauna at about 2000 metres, and the upper limit at about 800 or 1000 metres. The charts of the area south of the ridges published by the Danish " Ingolf " Expedition show that beyond 2000 metres the slope of the bottom becomes less steep downwards to the vast abyssal plain whose upper limit may be put some-. 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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