Species Cephalodiscus (Idiothecia) nigrescens Lankester, 1905

Museums

Regional Maps

• Cephalodiscus nigrescens Lankester, E.R. 1905. On a new species of Cephalodiscus (C. nigrescens) from the Antarctic ocean. Proceedings of the Royal Society of London 76: 400-402 1 pl. [400-402].

  Type data:

   Syntype(s) BMNH 1907.9.4.31, 36–39, 41 (part of original material dredged off Coulman Is. is held by CUMZ, I27682), (probable) off Coulman Is., Ross Sea, Victoria Land, 73º18´S 170º00´E, at 183 m.

 

Distribution

Extra Distribution Information

Off Enderby Land, MacRobertson Land, Princess Elizabeth Land, Kaiser Wilhelm II Land, Queen Mary Land (Davis Sea), King George.

Other Regions

Australian Antarctic Territory

Original AFD Distribution Data

Antarctic Region

• Australian Antarctic Territory

Ecological Descriptors

Benthic, colonial, marine, sedentary.

Extra Ecological Information

Tubiculous, branching coenoecium, frequently found in association with Cephalodiscus (Orthoecus) solidus Andersson, 1907, Cephalodiscus (Orthoecus) densus Andersson, 1907, and Cephalodiscus (Cephalodiscus) hodgsoni Ridewood, 1907, and siliceous sponges, Bryozoa, Alcyonaria, hydrocorallines, grey mud, stones, rocks.

 

General References

Burdon-Jones, C. 1998. Hemichordata. pp. 1-50 in Wells, A. & Houston, W.W.K. (eds). Zoological Catalogue of Australia. Vol. 34. Hemichordata, Tunicata, Cephalochordata. Melbourne : CSIRO Publishing, Australia 298 pp. [44] (Cephalodiscus (I.) nigrescens is the only species of this subgenus to penetrate into the Antarctic, where it is the commonest species in the genus and probably circum-polar in its distribution; the BMNH holds extensive collections of this species made by the National Antarctic Expedition and the Terra Nova Expedition. The earliest record of C. (I.) nigrescens is from a station within 3' longitude of Coulman Is. where three pieces are supposed to have been dredged from 549 m, Jan. 1841 or Feb. 1842 by the Erebus and Terror Antarctic Expedition in the Ross Sea, see Ridewood, W.G. 1921. On specimens of Cephalodiscus densus dredged by the 'Challenger' in 1874 at Kerguelen Island. Annals and Magazine of Natural History 9 8: 433–440)

John, C.C. 1931. Cephalodiscus. Discovery Reports 3: 223-260 pls 33-38

Johnston, T.H. & Muirhead, N.G. 1951. Cephalodiscus. Report of the British, Australian and New Zealand Antarctic Research Expedition, 1928–31 B 1(3): 89-120-3 pls

Markham, J.C. 1971. The species of Cephalodiscus collected during operation Deep Freeze, 1956–1959. Biology of the Antarctic Seas. Antarctic Research Series 17: 83-110

Ridewood, W.G. 1907. Pterobranchia. Cephalodiscus. pp. 1–67 pls 1–7 in, National Antarctic Expedition 1901–1904. Natural History. London : British Museum.

Ridewood, W.G. 1918. Cephalodiscus. British Antarctic 'Terra Nova' Expedition. Zoology 4(2): 11-82 pls I-VI

Ridewood, W.G. 1918. Pterobranchia. Australasian Antarctic Expedition, 1911-14, Scientific Reports, Series C: Zoology & Botany 3(2): 1-25

Ridewood, W.G. 1920. A key for identifying the species of Cephalodiscus. Annals and Magazine of Natural History 9 5: 407-410 [407]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
		12-Feb-2010	(import)