Archive image from page 620 of The depths of the ocean;. 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 depthsofoceange00murr Year: 1912 Fig. 420. Meganyctiphanes noivegica, M. Sars {'{). This form has highly phosphorescent organs on the under side of the bodv. are mostly colourless, transparent, with large red spots around the mouth, and have generally the appearance of small prawns with black stalked eyes. The most important species are Meganyctiphanes
Archive image from page 620 of The depths of the ocean;. 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 depthsofoceange00murr Year: 1912 Fig. 420. Meganyctiphanes noivegica, M. Sars {'{). This form has highly phosphorescent organs on the under side of the bodv. are mostly colourless, transparent, with large red spots around the mouth, and have generally the appearance of small prawns with black stalked eyes. The most important species are Meganyctiphanes norvegica (Fig. 420) and Thysano'essa longicaudata. The closing-net samples determined by Sars included some Schizopoda, Amphipoda, and Isopoda (see list, pp. 654-655). The great majority of the species of Amphipoda. Amphipoda inhabit the warm oceans, where they occur mostly in the upper 400 metres of water. Woltereck has described some very remarkable deep- water forms belonging to the genera Lanceola and Scypholanceola (Fig. 421). The members of the latter genus have light-reflecting eyes, the retina of which is entirely transformed and provided with peculiar cornet-shaped reflectors. They were previously considered rare, but according to Woltereck, who is describing our material, they were taken in great quantities during the cruise of the ' Michael Sars.' Another deep-sea form is the large transparent Cystosoma with splendid red eyes, which was taken in both our southern and northern sections in depths exceeding 500 metres (Fig. 422). One of the most striking types is the genus Phronima of the family Hyperidae. Most of the Hyperidae make themselves a house of the empty mantle of a Salpa or Doliolum, and lay their eggs in the Fig. 421. Scypholanceola agassizii, Woltereck. (From Woltereck.)
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