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.

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