. Fig. 6. Chart showing the distribution of Atolla luyvillei, Haeckel, in the South Atlantic and Southern oceans. only Atolla forma hairdi and verrilli have been taken in the neighbourhood of Cape Verde from a depth of 800-200 m. Atolla wyvillei typica, which previously has been recorded as the only species in Antarctic waters, has been found by the ' Discovery' in the same regions (south of South Shetlands, Bellingshausen Sea, South Georgia, Bouvet Island). Between the tropical region on the one side and the Antarctic on the other, we find a large region in which all three kinds are found nea
. Fig. 6. Chart showing the distribution of Atolla luyvillei, Haeckel, in the South Atlantic and Southern oceans. only Atolla forma hairdi and verrilli have been taken in the neighbourhood of Cape Verde from a depth of 800-200 m. Atolla wyvillei typica, which previously has been recorded as the only species in Antarctic waters, has been found by the ' Discovery' in the same regions (south of South Shetlands, Bellingshausen Sea, South Georgia, Bouvet Island). Between the tropical region on the one side and the Antarctic on the other, we find a large region in which all three kinds are found near each other. In several hauls specimens of all three forms were found together. A glance at Fig. 6 shows also that the material is not distributed equally along the route. There seem to exist several centres of distribution: south of Cape Verde, north of South Georgia, the waters near the Cape
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