Australian Museum Journal Scientific results of the trawling expedition of H.M.C.S. "Thetis" off the coast of New South Wales, in February and March, 1898, the Alcyonarians of the "Thetis" Expedition
- Shortform:
- Thomson and Mackinnon, 1911, Aust. Mus. Mem. 4(13): 661–695
- Author(s):
- Thomson, J. Arthur; Mackinnon, Doris L.
- Year published:
- 1911
- Title:
- Scientific results of the trawling expedition of H.M.C.S. "Thetis" off the coast of New South Wales, in February and March, 1898, the Alcyonarians of the "Thetis" Expedition
- Serial title:
- Australian Museum Memoir
- Volume:
- 4
- Issue:
- 13
- Start page:
- 661
- End page:
- 695
- DOI:
- 10.3853/j.0067-1967.4.1911.1509
- Language:
- English
- Plates:
- plates lxi–lxxxii
- Date published:
- 27 January 1911
- Cover date:
- 27 January 1911
- ISSN:
- 0067-1967
- CODEN:
- AUNMA5
- Publisher:
- The Australian Museum
- Place published:
- Sydney, Australia
- Digitized:
- 30 March 2009
- Available online:
- 03 August 2009
- Reference number:
- 1509
- EndNote package:
- EndNote file
- Title page:
- Title page (72kb PDF)
- Complete work:
- Complete work (10191kb PDF)
Abstract
The collection of Alcyonarians made by the "Thetis" includes thirty-five species, of which thirteen are new,—a large proportion. When the specimens are arranged in systematic order, it is seen at a glance that the collection has a very definite character, namely, the proportionately large number of Isidae (e.g., six species of Mopsea, four new) and of Primnoidae (e.g.,five new spedes of Plumarella). These Isid and Primnoid colonies are extraordinarily beautiful, and their superficial resemblance to large fronds of Sertularians is striking. It is a matter for gratification that numerous specimens of some of the new species have been preserved, so that it was possible to make sure that one was not dealing with individual variations. Another feature of the collection is the frequent occurrence of encrusting colonies of Alcyonium (Erythropodium) membranaceum and A. reptans described by Kükenthal, which grow over Gorgonid axes in a very misleading fashion. It is not too much to say that an unprejudiced observer, who had not seen the real state of affairs exposed in unmistakeable cases, would describe these Gorgonid axes encrusted with Erythropoditlm as peculiar Axifera.