Fróðskaparrit - 01.01.2004, Qupperneq 296

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CERIANTHARIA (CNIDARIA: ANTHOZOA) FROM THE FAROE ISLANDS
van Beneden (1897; 1923), Carlgren (1906;
1912) and Bourne (1919), but so far no one
has been able to trace the development of
this larva and establish its benthic stages.
Mature gonads were found several times in
the mesenteries of Arachnactis albida and
the hypothesis of paedogenesis was exten-
sively discussed (Bourne, 1919; Leloup,
1954).
Arachnactis albida was first record-
ed from the Faroe Islands in 1889, when
Boveri reported it from the Faroe Chan-
nel (Triton, 1882). The same larva was re-
ported off the Wyville-Thompson Ridge in
1895, (Vanhoffen, 1895), from the Faroe
Channel in 1897 (Fowler, 1897) [Research,
1895-1897], and then, in 1906, by Carlgren
(1906) [Ingolf, 1895-1896]. In 1942, Lel-
oup reported A. albida south of the Faroe-
Shetland Channel and, in 1954, from the
Faroe Channel.
In 1942, in a review of Anthozoa distri-
bution, Carlgren briefly mentioned the only
adult form known from the Faroes - Ceri-
anthus vogti Danielssen, 1890, collected by
the “Ingolf’Expedition (St. 138)atadepth
of 887 m. The species was reported north
of the Faroes and has never been recorded
again from the region.
Material and results
The present study is based on the BIOFAR
benthic samples taken in 1987-1993. The
cerianthids were found only at five sta-
tions.
All cerianthids from the BIOFAR sam-
ples were determined in conformity with
common practice: the preserved specimens
were dissected longitudinally, laid open,
fastened with pins to a paraffin wax plate
and the aixangement and structure of the
mesenteries were studied.
The results of the original studies of the
BIOFAR materials, as well as data from the
literature, are summarised in the taxonomy
list systematics below. For each species in
the Iist the following information is given:
valid name with author and publication
year; synonymy list; reference to a good
description of the species; previous records
from the Faroe Islands; the BIOFAR station
numbers where it has been found; area de-
scription; depth range; temperature range
of near bottom water (for benthic species);
notes on the distribution and the depth
range in the Atlantic Ocean with references
to corresponding monographs and papers.
Additionally, for Cerianthus vogti Dan-
ielssen, 1890 the diagnosis of the species
is provided, since the characteristics crucial
for the determination of the species were
totally absent in previous descriptions.
Order CERIANTHARIA
Suborder SPIRULARIA
Family CERIANTHIDAE
Genus Cerianthus Delle Chiaje, 1830
Cerianthus vogti Danielssen, 1890 (fig.i, fig.
2. a - b)
Synonyms: Cerianthus abyssorum Danielssen (1890)
Good description: None.
Previous records: Danish-Ingolf Expedition St. 138
(Carlghren, 1942).
BIOFAR stations: 459, 768, 772, 9012.
Area: deep waters north of the Faroe Islands and
Faroe-Shetland Channel.
Depth range: 800-1022 m.
Temperature: -0.5 °C - -0.85 °C.
Atlantic distribution: the Faroe Islands, Norwegian
Sea, east of Iceland.
Atlantic depth range: 600-2926 m (Danielssen, 1890,