. 5<5 O ATOLLA CHUNI VANH O PREVIOUS RECORDS Fig. 9. Chart showing the distribution of Atolla chuni, Vanhoeffen. Vertical distribution (see Table IX). A. chuni is a true deep-sea medusa with the typical pigmentation of abyssal forms. The ' Valdivia' found it in ± 1500 m. depth, and the ' Scotia' in about 2000 m. The ' Discovery' never collected A. chuni in closing net hauls from 800 m. upwards. The most superficial catch was made south-west of the Cape between 800 and 900 m. and between the Cape and Bouvet Island in 850-950 m. In all other closing net hauls the species was present only in d
. 5<5 O ATOLLA CHUNI VANH O PREVIOUS RECORDS Fig. 9. Chart showing the distribution of Atolla chuni, Vanhoeffen. Vertical distribution (see Table IX). A. chuni is a true deep-sea medusa with the typical pigmentation of abyssal forms. The ' Valdivia' found it in ± 1500 m. depth, and the ' Scotia' in about 2000 m. The ' Discovery' never collected A. chuni in closing net hauls from 800 m. upwards. The most superficial catch was made south-west of the Cape between 800 and 900 m. and between the Cape and Bouvet Island in 850-950 m. In all other closing net hauls the species was present only in depths of 1000-1500 m. The specimens collected with open nets were also found only when nets were used at depths exceeding 1100 m. All these facts prove to be a true component ofBigelow's so-called intermediate fauna. It prefers deeper layers than A. wyvillei. Most striking is the rich catch from St. 391 (south-east of the Falkland Islands) from 1200 to 1300 m. depth, with twenty-one fair individuals, almost the half of the whole. It is a pity that it
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